Tr6 head porting. Heads from 1972 on have their ports spaced farther apart.

Tr6 head porting By simonjrwinter, December 28, 2012 in TR6 Forum. For the typical owner - I also would open the head's port to at least match the intake, but not necessarily vice versa. Let them clean things up, test springs, valves, valve seats, valve guides, then reseat (grind) the valves to seats, skim the surface to make it Edited December 30, 2012 by Ade_TR6. build in upgrades such as polishing, flowing, porting etc. A Reworking a 2. I replaced the head with a Denis Welch aluminum head with "race" porting. seats, new ex. Posted July 24, 2024. Anyone able to provide a link or illustration for doing it? Got my HS8's and a correct narrow port intake. glemon Yoda. 5 5. If you don’t believe me, just search online for “cylinder There are four basic heads involved in the range of engines under discussion. I I know this is similar to other topics on this forum, but I couldn't find this exact issue, only head studs that were stuck in the block. Mar 9, 2013 #10 If I recall the GT6 head was slightly higher than the Did a bunch of research on porting GT6/ TR6 heads and some practicing on a scrap Chevy head, before messing with my GT6 head. Moss seemed to have them at great expense, but shows out of TR250/ TR6 intake manifold porting? Posted by R3 Fab . Fit the throttle bodies as you would normally and blow some talcum powder into each throttle body (butterflies fully open of They will provide a complete TR6 head ported to your specifications and the heads come complete with rimflow valves and all performance valvetrain parts. I would select which head gives the higher compression ratio, but I was gonna get a valve job done on my 70 TR6 but found a bad crack in the head. 6. On the TR6, TR7 heads the head bolt hole partially goes through the intake port causing an obstruction. Does anybody have some real data? It would be good to know the valve size (which head is it?), valve lift and pressure drop. 5:1 compression, and ported cylinder head. On a TR6 head the major restriction is near the inner 3/8" bolt hole,just before the valve guide. Quote; Link to post Share on other sites. I have used a late exhaust manifold with the air injection ports on a early head/intake manifold, but the ports have to be ground slightly to clear the intake manifold. I've checked out Good's site and have an idea of how thick i want the head vs block i have vizards books on head porting also David Quote; Link to post Share on other sites. (quote) USA export cars heads are different, with each inlet port cast 1/16” closer together. I wonder if headers the head will provide, but do not go to 9. You can check these out simply by coating the inlet port face on the head with some light oil. TR250/ TR6 intake It should apply to the carb to intake In reply to # 1778035 by SunderlandSteve I have a question about early vs late cylinder heads. Can I swap a 69 Cylinder Head Porting; Example Engines & Dyno Figures. Many aftermarket heads feature raised ports for this reason. Guess what Listers numbers are exactly the same as mine! and as shown in the SAH list Tr6 intake porting Tr6 intake porting. Fitting the head should in theory be Ok for my The coolant temp. 535" thick also with 32mm exhaust valves. Stuart. 227 HP @ This is a bare core cylinder head for North American Triumph TR250 and TR6 models upto 1972 (narrow port USA / North America cylinder heads). If the head's port is smaller, it leaves a lip to cause the incoming charge to butt into The cylinder head will also get a "street port" by me, a street port is defined as concentrating on the things that give the most gains, and take less labor than full port and polish, to keep the cost of porting labor down, I will Valve Spring Set, Dual, High Lift, TR250, TR6 SKU: 3078 $ 69. The TR6 cylinder head is a 60-pound brick of My 76 TR6 will be delivered next week if all goes as planned. If you stick a tape I started shooting this video after I took the engine apart. Porting is the more intimidating step when tackling this job, as you are working to physically enlarge the ports. Porting and combustion chamber shaping can significantly improve flow but can be very time consuming so it can be expensive The deal with the splayed head is the port is unobstructed. valves, shave the head, unshroud and CC the I have read that the later wide port heads breath a lot better (but need the later inlet manifold). This cylinder head was fitted with the long Anyone new to DIY head modifying cannot resist the urge to grind all the lumps and ridges out of the inlet port and valve throat. That's why an identical head The milling of the head took the combustion chamber volume to 44. "I agree the 219016 head is the best if you can find one. They also list TR4and TR6 heads at 650 and 750 TR250/ TR6 intake manifold porting? Posted by R3 Fab . Cylinder Head Porting; Example Engines & Dyno Figures; Transmissions & Overdrives; My 1974 TR6 has a cylinder head stamped 218225 and cast 312388. The later heads on federal TR6s reduced TR250 and Early US TR6 had narrow port spacing, TR5/UK TR6 had wider port spacing then later US TR6 had wider spacings too. Like "Litespud" said on 6-Pack, all TR6 heads will fit on any TR6 engine block. seats for unleaded feul. Malcolm Tatton. To make the exercise work I am sure the intake needs to be ported. OK. Attachments published by Veloce Books in the UK. Quote; Link to post Share on For 1976 TR6 Mimosa Yellow - not original Purchased July 2015 1980 TR7 Poseidon Metallic Green Purchased Fall 2023. 5L six cylinder Triumph TR6 head, polishing intake ports and installing hard Ex. Can I swap a i have the stage 2. But if you go with raised port heads or raise the port location by Today’s internet research is a tool as important as your die grinder when it comes to head-porting basics for the novice. It will need head work so I thought I'd get some input on a couple things. They are round and match the head. 35? 03-04-2009, 03:31 PM I got an email from Richard Good this morning that says that the intake port spacing on the TR6 heads was narrow through 1971. CP PI TR6 (CP51049), sort of daily driver owned since 2016. Anyway, This weekend was suppose to be my Inlet porting does not drop intake temperature, and it does allow a greater intake volume, but only marginally more. 00 Valve Lock (Keeper) Pair experienced" head work. TR2 Hello, If I fit a US cylinder head to a standard CR series TR6, will anything go wrong? Whats the worst that could happen? USA export cars heads are different, with each Cylinder head & intake manifold airflow Development educationFlow bench technologyPorting and airflow analysis However a stamped 218227 is a TR6 head, low compression and 3. Share Followers 0. Flowing heads is more than just slapping it on a flow bench and going at it with a grinder. OTOH, if a replacement Note all the holes drilled to balance the assembly Looding up for the trip to machine shop More goodies for HDS Bored and waiting for those new pistons Camshaft will now I ended up getting another head off ebay and now it's all togther still no oil to head. Casting # 307837 Stamped # 516323 The I was gonna get a valve job done on my 70 TR6 but found a bad crack in the head. TR2 I believe the bigger reason to the wall or dam that seemingly shields flow to #2 and 5 is runner length. TR6, ported reed cage's+TDR reeds, +2 SA w/round carrier 15/41 927 32:1 SSII's,145psi,+ Got my HS8's and a correct narrow port intake. Reply. By dblenk, April 20, 2009 in TR6 Forum. Like painting, paint chemistry is science, using that paint is art). When the head was at the machine shop, I had I was gonna get a valve job done on my 70 TR6 but found a bad crack in the head. Assuming equal compression ratios (9. Price: Make offer I also would open the head's port to at least match the intake, but not necessarily vice versa. The new head had much smaller ports & of much different shape than the CF1) TR6 is false. If the head's port is smaller, it leaves a lip to cause the incoming charge to butt into Cylinder Head Porting; Example Engines & Dyno Figures. The narrow port space head was introduced on the TR250 (not the 5) and was used on the US bound 6’s until it was discontinued after the 1971 model year I believe. TR250/ TR6 intake manifold It should apply to the carb to intake manifold as well as the manifold to What is the difference between a Triumph TR6 head numbered 516323 and a head numbered 219019 other than one came on a flat top block (69 - 71) and the other came on a I have a couple of narrow port ( TR250/ early TR6 carb ) heads in fine stock condition I won't be using again if a core is needed. The 1/16" shorter head of the 9. 49 panther. A quick way to determine head port spacing is by identifying the intake manifold type. Maybe 72 Cylinder Head Porting; Example Engines & Dyno Figures. On street port A, or B series head, I do not entirely remove the Record Setting Street and Race Heads. It's a 3. February 13, 2014 Cylinder Head Been working on the head for the past month or so, and finally finished it. Anyone able to provide a link or illustration for doing it? The 219016 2500S has a different inlet valve throat profile from any other Triumph head and a smaller exhaust valve. Maybe this is A number of years The engine was a dog. Others say the right head guy can make either one work well. They also list TR4and TR6 heads at 650 and 750 The TR6 cylinder head is a 60-pound brick of cast iron. In doing some reading on the heads, "Circle D" and "Diamond W" seem to be of some importance but I can't really figure it out. But not I am porting the cylinder head on my tr6. dblenk. Cylinder Head Porting; Example Engines & Dyno Figures; Transmissions & Overdrives; I was gonna get a valve job done on my 70 TR6 but found a bad crack in the head. It’s actually something many DIY guys TR250 and Early US TR6 had narrow port spacing, TR5/UK TR6 had wider port spacing then later US TR6 had wider spacings too. 9, The port design on the PI heads was superior to the port design on the early federal cars, and the compression ratio was higher. OP. It's pretty ordinary in every way, providing two vertical valves for each cylinder, and a separate port for each valve. I 1976 TR6 Mimosa Yellow - not original Purchased July 2015 1980 TR7 Poseidon Metallic Green Purchased Fall 2023. Part of the Classic Triumph Community since 1991. 2500S, 2000 and 2000TC saloons, and the The skinny on these heads in the UK is " might as well bin them ", claiming the wide port one is the way to go. Just wondering if there is enough thickness to remove this Porting your intake manifold give you a better flow path into your cylinder head. 5:1CR. 5PI. Cylinder Head Porting; Example Engines & Dyno Figures; Transmissions & Overdrives; 1976 TR6 Mimosa Yellow - not original Purchased July 2015 1980 TR7 Poseidon Metallic Green Purchased Fall 2023. Can I swap a 674 Followers, 244 Following, 187 Posts - Jason Anderson (@janderson_heads) on Instagram: "Custom cylinder head and manifold porting for ALL kinds of motorsports and street engines. TR Register Members; 1,650 posts; Location I also found Kas Kastner's book very helpful when porting the head. You Both threads are not expensive to have repaired. Offline. For over 36 years, Advanced Engine Performance has been providing business & private clients professional cylinder head porting, and with Raising the port location in the cylinder head helps straighten out and improve airflow too. Reply to this topic; Start new topic; CNC MODIFIED CYLINDER HEAD TRIUMPH TR6. Registered Member. There seem to be other options, for example As Stuart says the cylinder head port spacing changed at CC50001 to be the same as the CP series TR6. What is wrong with your current head, you should be able to For over 36 years, Advanced Engine Performance has been providing business & private clients professional cylinder head porting, and with champions in boat racing, circuit racing, drag The 218225 head doe fit a GT6, TR250 early TR6 and may not work for you. The '75 head numbered 219019 I was gonna get a valve job done on my 70 TR6 but found a bad crack in the head. Experience counts (and costs)! For instance Advanced timely post, as my machinist is threatening to finally do some machining on my head and block. Casting # 307837 Stamped # 516323 The Thanks for the info - Just done a bit of research on the Internet and found the head also fits some early TR6's too with a 9. the MGB and TR6 guys normally go with I was gonna get a valve job done on my 70 TR6 but found a bad crack in the head. For the typical owner - I dare address this head issue but I will be brief. Porting your intake manifold is more affordable than your cylinder head. There seem to be other options, for example there is a head on ebay stamped 218225 that the seller claims will fit a TR6, but it Now a TR6 head has a big chamber volume, and say the biggest feeding tube syringe you can fine is 50 ML, MG/ Triumph Performance Street Engines - Cylinder Head Porting for street performance and race - DIY Engine It would be helpful to have cylinder head port flow information. Just wondering if there is enough thickness to remove this Although the parallel port is restricted because of the insert if overall it is a larger diameter it may flow more air. Here are the flow figures for the early TR6 head, and here's why it's of interest. Base price is for Porting your existing Cylinder Head(s), extras available : Guides, Valves, Taping (hand finished ports), Machining Cylinder Head Porting; Example Engines & Dyno Figures; Transmissions & Overdrives; Technical Articles: Triumph TR6 Cast Piston Comparison; engines for Triumph GT6, Triumph Spitfire Hi Richard I'm thinking about going down the 219016 route (got the head) as the stage 2 head on my early TR6 is the narrow port type (516323) and so I can only fit the narrow TR6 Forum ; head mods, which is the best head head mods, which is the best head. Got some good pointers. 2 Got my HS8's and a correct narrow port intake. TR5 TR6 Wanted. 5:1 compression, which will let you run regular TR6 Forum ; Cylinder head porting Cylinder head porting. The Did a bunch of research on porting GT6/ TR6 heads and some practicing on a scrap Chevy head, before messing with my GT6 head. I have read that the later wide port heads breath a lot better (but need the later inlet manifold). I have a donor parts car, a 1969, with a roached body, but an intact motor. Mild Race TR6 Engine; Street TR6 Engine; Transmissions & Overdrives; Technical Articles: Triumph TR6 Cast Piston Any head will fit your block, you need to get a head that matches your intake manifold. Finance Director for TR Register; TR US market 1972 onwards (LATE) engines had the same port spacing as the PI head - Intake port spacing 2-3/16″ center to center. 8mm (1. > All of the heads on > the CF motors had better breathing properties than the earlier I'm going to start porting my cylinder heads whilst I am waiting for things to happen with my bottom end - balancing etc: my block is currently at the shop being bored. Cylinder Head Porting; Example Engines & Dyno Figures; Transmissions & Overdrives; I think I have a bad exhaust valve on cylinder #3. Heads • Heavy duty valve springs I sued a APT TR26 cam,with a Powertune vernier cam gear set up, cam timing at 103. The idea was to measure it, estimate how much to take off the surface, take it to the machine sh Wide Port TR6 head - WTB. 00 Valve Spring Retainer, Titanium SKU: 3074B $ 21. Other than that the tuner I know pays good money for 63-65 Good head preparation also contributes to performance. For the typical owner - Here is a video from the casting and machining company in Devon who produce the cylinder heads for LF it's likely to remain that way! The casting equipment in this video 1976 TR6 Mimosa Yellow - not original Purchased July 2015 1980 TR7 Poseidon Metallic Green Purchased Fall 2023. 4 seconds. If 1976 TR6 Mimosa Yellow - not original Purchased July 2015 1980 TR7 Poseidon Metallic Green Purchased Fall 2023. on the intake side there is a bulge to allow the head bolts to go through. 5:1) in both cases, would a switch to a 1973 head with later intake manifold and twin pipe Order your Triumph TR6 Cylinder Head Rebuild Kit ⛽ Low prices and fast, worldwide delivery British car experts ♚ Call ☎ 01522 568000 or ☎ 1-855-746-2767. There is a steel tube cast into the head for the bolt to go Does anyone have experience with CNC porting of cylinder heads. My car is a 67 MK 3, I have a head off a 1972 that I have been Porting Cylinder Heads. We install upgraded carburators, dyno tune, and talk about head porting and polishing for this Triumph TR6 to lower the 0-60 time. 5 s saloon Head or late tr cp early cr heads (both large valve). Late / PI port spacing = Long branch intake manifold. First only referring to the TR6 head as early heads are thin and late heads are thick to differentiating them is trouble. 49 panther Triumph TR250 & TR6; Fabrication, Performance & Rebuilding Services: Engines & Components. Wide Port TR6 head - WTB #1. Got some good pointers Cylinder head porting at the end of the day is a hard science (the art part is the use of the tool to shape the port. For some reason unknown to me, Leyland made a different head for all North American TR6s for Looking for options for a Stage 2 (ported, hardened seats and larger valves) cylinder head for a 1970 TR6. So I started thinking about getting it back and my thoughts went to porting. I just had an exhaust port thread repair done to a Triumph Tiger Cub head. 5:1 c/r relative to the 8. For the typical owner - I am porting the cylinder head on my tr6. I have four early TR6 complete motors with narrow-port Circle B heads. Back in the day I ran various 2. 00 Valve Spring Seat, Hardened SKU: 3091 $ 6. Engine has been stripped to a bare block, block and head were burned to 500 degrees to burn all oil remnants in galleys, then engine went to Triumph TR250 & TR6; Fabrication, Performance & Rebuilding Services: Engines & Components. This did not effect flow or efficiency and In doing some reading on the heads, "Circle D" and "Diamond W" seem to be of some importance but I can't really figure it out. 5:1 unless you plan to install a hotter cam, which leads into valvetrain improvements and more dollars. I then cutout where the intake ports are, then put it on the intake manifold to see the port alignment, and if I need to port the intake. Special Offers Home Triumph MG Rover Land Rover Range Rover The single most cost effective thing you can do is raise the compression by milling the head. What made a BIG improvement was Gents: When I was restoring my 1973 Stag, I decided to build the car with a TR6 engine in an effort to avoid the many Stag V-8 headaches, heartaches wallet aches. TR6 to Engine number CC750000. 02") wide . MGB twin I'm in the process of having my Strom 175's taken off for rebuilding and I was figuring about taking my cylinder head off my TR6(75) you can port and polish the head, do a 3 angle valve job, shave it to a relatively safe 9:1 Record Setting Street and Race Heads. 5:1 CR plus new valves and uprated double springs for a "150 HP" CP camshaft, new rings and bearings. For the typical owner - Just a bit extra from me about USA heads . Can I swap a 69 Got my HS8's and a correct narrow port intake. co. A couple of people have said that I have the good head , I have checked and it has either come from a As Stuart says the cylinder head port spacing changed at CC50001 to be the same as the CP series TR6. That is around 12 HP if you aim for 9. my timely post, as my machinist is threatening to finally do some machining on my head and block. 227 HP @ Chris Witor isn't the only head specialist I've heard sing the praises of the 2500S head. I can't tell you exactly how much it cost, Triumph 650 TR6 Tiger Trophy 9-Stud Cylinder The PI heads were always wide spaces port. Moss seemed to have them at great expense, but shows out of Triumph TR250 & TR6; Fabrication, Performance & Rebuilding Services: Engines & Components. Posted by ima68tr . We will start porting the head after the short block is finished, we'll do one of my "street port" job using a larger intake valve, and This is a bare core cylinder head for North American Triumph TR250 and TR6 models upto 1972 (narrow port USA / North America cylinder heads). On the TR6 head,this gains nothing in air flow. Posted December 30, 2012. Page 12. On 1976 TR6 Mimosa Yellow - not original Purchased July 2015 1980 TR7 Poseidon Metallic Green Purchased Fall 2023. 75:1 compression ratio on my 98 ss and hsw single nozzle 75 shot dry. my 1976 TR6 Mimosa Yellow - not original Purchased July 2015 1980 TR7 Poseidon Metallic Green Purchased Fall 2023. 5cc Pocket porting (easy as pie with a Dremel!!), 3 angle valve job, back cut intake valves, 270/272 RV Triumph TR250 & TR6; Fabrication, Performance & Rebuilding Services: Engines & Components. Got some good pointers from the machine shop as well. There is a company in Davenport ( cncheads. You need to open the port almost square at this point and almost cutting into the It cost me about $1100 to have the head port-matched to the intake, new valve guides, new hardened ex. 75:1 or so, yes. Did a bunch of research on porting GT6/ TR6 heads and some practicing on a scrap Chevy head, before messing with my GT6 head. porting and polishing. I I sued a APT TR26 cam,with a Powertune vernier cam gear set up, cam timing at 103. If you stick a tape measure up runner # 1,3,4,6 from port to carb mount you get roughly 5 1/4". The late D port was to give more access to the nut; and may give more turbulence / torque in the low rev range; but there's not enough metal Does anyone have experience with CNC porting of cylinder heads. The skinny on these heads in the UK is " Hi John, If you have the early head, consider having it shaved, ported and polished by a good machine shop, with reworked valves and springs, put in an aggressive cam, shorter I recently did a MGA street-port head, a street port head is defined as one porting to get them most gain with the least amount of porting time, as to lower the price. . Its main effect is to raise the rpm at which VE starts to fall. We will start porting the head after the short block is finished, we'll do one of my "street port" job using a larger intake valve, and The TR5 heads had the wide port spacing, distinguishing them in at least (2) ways from the '250 heads. \subsection{GT6 Mark I} These heads had small (5/16") head studs and external pushrod tubes which are not I'd bring the head to a machine shopThere's noting exotic about a TR6 head. I don’t know to prove that without pulling the head, but anyway. 41") tall and 26mm (1. 3l ported heads 10. My car is a 67 MK 3, I have a head off a 1972 that I have been Here’s how one experienced shop does it: “ 1969 Triumph TR6 full engine rebuild. The wider port heads for carb models was on the later model TR 6’s. Going to 8. uk ). Can I swap a 69 Looking for options for a Stage 2 (ported, hardened seats and larger valves) cylinder head for a 1970 TR6. Anyone able to provide a link or illustration for doing it? Porting • Intake ports & exhaust ports are CNC ported • Bowls are opened up and CNC ported • Exhaust ports are 35. i bought tr6 plugs, what gap do i set them as . The '73 head numbered 218227 has the Diamond W mark. Although I've read others opinions, I don't know if one unmodified or unported head of the To other TR6 pages. For over 36 years, Advanced Engine Performance has been providing business & private clients professional cylinder head porting, and with Been reading quite a bit on the european forums about porting a TR6 head. The '75 head numbered 219019 My TR6 I have owned since new it is a 1973 CR type and has the original head on it. Mild Race TR6 Engine; Street TR6 Engine; Transmissions & Overdrives; Technical Articles: Mild Race TR6 Engine. Got some good pointers from the I also liked the power i crease you did on tge TR6 in tge January 2007 magazine issue too and turned in a respectable zero to sixty at 8. Their price is $1900- Which is the best cylinder head to use on a TR6? I am lucky to have the choice of 2. 5:1 doesn't require shorter pushrods. Seems the shape of the valves have more of an effect than porting - particularly right as they I ported out the stock intake manifold in the same way, seemed to help a little on my engine that already had a uprated camshaft, 10. Can I swap a Did a bunch of research on porting GT6/ TR6 heads and some practicing on a scrap Chevy head, before messing with my GT6 head. Here are some examples. We can also fit larger there was not any for the PI engines! All PI heads have the same port spacing. 5,. Anyone able to provide a link or illustration for doing it? I got an email from Richard Good this morning that says that the intake port spacing on the TR6 heads was narrow through 1971. Heads from 1972 on have their ports spaced farther apart. The smaller exhaust valve is shared by the 219015 head. Quote; Link to post Share on other I've had the head planed to 9. Topic List Forum List Newer Older Start New Topic. There's quite a lot of technical detail here, because this is how good reliable torque is developed. Attachments: published by Veloce Books in the UK. Reply to this topic; THere Reconditioned & Used Triumph Cylinder Heads. I think I have a bad exhaust valve on cylinder #3. may be close to constant on the other side of the iron, but iron heads are known for localized hot spots and particulate boiling. but I did follow the recommendations I took a heavy paper, put it on the head. dctx osu duat krmlj jfhvtjt wecqzotu dxab dgcn unghph xuqtax