• Hey there Guest!
    If you enjoy BCF and find our forum a useful resource, if you appreciate not having ads pop up all over the place and you want to ensure we can stay online - Please consider supporting with an "optional" low-cost annual subscription.
    **Upgrade Now**
    (PS: Subscribers don't see this UGLY banner)
Tips
Tips

tr4

  1. 1

    New Member Intro. and Maybe Something of Interest to You

    Hello All, I've lurked long enough and will now join your knowledgeable community. To smooth my entry and establish some "bona fides" as a Triumph nut I will provide a possible answer to an old TR4 competition question at the end of this post. But first too much about me and my cars. My...
  2. S

    TR4/4A TR4 front and rear suspension

    i have an early TR4. i need to replace the front shocks and the rear lever shocks. it looks like the front shocks just unbolt? is it as easy as it looks? i'm assuming you don't have to tear into the front suspension to do this? on the rear, i've got panhard bars; they are welded in. i'm...
  3. T

    TR4/4A TR4 Carburetors/Idling

    Have adjusted the carburetors SU-H6 as the two front spark plugs were running too rich. Flow meters show identical measurements. Gunsun Colortune shows blue/ red flame. Still the two front cylinders are fouling the spark plugs. If the mixture is set to more lean, it won't idle when driving...
  4. Tim Tucker

    TR4/4A Which seat frame do I have?

    Hi Guys! I've stripped my passenger seat down and would really appreciate your knowledge on what frame I have. My TR4 was built 10/23/1962, but my seat covers (per Moss pictures) are from a 4a. Are my frames from a 4a? The front of the passenger side has a small 'dent' in the lower rail that...
  5. T

    TR2/3/3A TR4 Air cleaners on TR3

    Would appreciate any clarification of what I have read on some of the threads about alternative paper air cleaners. Do the early TR4 paper cleaners fit the TR3 carbs AND clear the inner fenders? Were the TR4 cleaners a complete disposable assembly, or were the paper filters replaceable? I see...
  6. S

    TR4/4A wheels

    with the slow disappearance of tires, especially high performance tires, for the TR4, I am looking at 16" wheels. I know you can put them on a TR6; does anyone have experience doing that on an early TR4?
  7. T

    TR2/3/3A Experience with repro cylinderhead

    Hallo there, I am rebuilding my TR3As engine and found leckage in the cylinder head between the water side and the cylinder 2 exhaust channel- some crack inside the head. So probably hard or impossible to repair - No big thing, just leaking little water onto the exhaust valve an limiting the...
  8. S

    TR4/4A electric fan

    i have a 62 TR4, which was pretty modified by its two previous owners. i've kept up the tradition; it needed an engine rebuild so we upped it to 89 mm pistons. needles to say, it runs a bit hot. did not have a mechanical fan on it when i got it; it had a pretty strange big heavy metal motor...
  9. B

    Triumph TR4 replacement fuel tanks

    Everyone, I wanted to tell everyone some good and bad news. I have found the archive of articles and discussion from this forum to be immensely useful in restoring my "gift" 67 TR4A. Thanks to you all !!! The good news is that I am very close to getting it on the road. The bad news is I...
  10. S

    TR4/4A problem with overdrive

    tr3 with a tr4 trans with od. the od pops in, but doesn't let go. even if i power off the car, the solenoid does not release. if i remove and replace the solenoid, it again pops in but not out. i have another tr4, where the od works fine. i notice on this car that there is some sort of...
  11. A

    TR4/4A Velocity Channel Fantomworks TR4A

    Hello everyone, Jay here. My TR4A is on the Velocity Channel Fantomworks Season 3. "Jay wants a stunning TR4A" Needless to say they took some editing liberties. They give you the impression that Dan delivered it back to me in some sort of drivable condition. I received it from him with a...
  12. T

    TR2/3/3A Oil Pump Grief

    Due to aggravating circumstances early in the rebuild my original pump was lost. I have heard the horror stories concerning the "County" or reproduction TR3/4 pumps and I guess there is only the one production source which all of the vendors use. One would think that one of the big outfits...
  13. MadMarx

    Off Topic Spa Summer Classic racing.

    Hi, a little race from last weekend. Cheers Chris
  14. T

    TR2/3/3A TR Rocker Arm Spacers

    Would be interested to hear from those who are using metal or nylon rocker arm spacers available from various sources as a replacement for the original springs, due to spring wear or perceived improvement; also from those who see no need whatsoever to ever replace the spring spacers. To my...
  15. B

    TR4/4A Tappet wear pattern inspection - normal or not ?

    I have a 67 TR4A with 144k total miles and 50k miles since cam R&R and bottom rebuild. Took the head off to repair a broken manifold stud (manifold side ports were out (-6 and -23 mil with respect to center port) ... the -23 side is where the manifold bolt broke... Anyway... I pulled the...
  16. J

    General Tech I Need a Set of Plug Wires! Help!

    So the story goes I needed a tune up. I got a cap and everything but the wires. I tried to make some sprial core chevy wires work and they didn't work, I busted through the cap when tightening the wires in. I ordered another cap and wire set from moss and it worked for about 3 seconds then...
  17. J

    General TR Let's Talk Timing a TR2/3/4 for Performance.

    Well I'm going to time my car and I've read the static timing posts, pages and articles but I can't help but think, is the factory timing the best? Then there's this John Twist video about emission TR6's and how they were retarded for emissions...
  18. T

    TR4/4A Flywheel... Lightened or Stock, that is the question

    I have a 1963 TR4 that I am rebuilding the engine from the block up. I have a new Findanza aluminium flywheel. I am increasing the bore to 87mm, and installing a very mild cam, otherwise it is a stock engine. What are the pros and cons of the lighter flywheel?
  19. doughairfield

    TR4/4A Intermittent vibration at 3000 RPM

    Good Morning, I've got a bit of a conundrum. I've got this irregular vibration which appears to be somewhere in the driveline on my 1964 TR4. The vibration only starts when you pass 3000 RPM under power and it’s irregular. I think I can feel the vibration most in the gear shift lever but I can...
  20. A

    TR2/3/3A Tr3 / 4 piston clearances

    Hello All, Ok so I am in the process of reassembling my tr3 engine with almost all new parts! With only 54K on the car I was astounded at the amount of wear i found! I have purchased the 87mm liner piston and ring set from one of the three big parts houses. Upon sitting down to check my ring...
Top