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  1. T

    Catcams timing

    5503505 304°/295° - 267°/259° - 12.45mm/11.95mm - 4.65mm/4.15mm . They are full race spec camshafts and to correctly fit them the cam timing must be dialed in using vernier camshaft pulleys and as such you cannot not rely on the factory camshaft locking tool set up to install correctly. The...
  2. T

    Cylinder 4 misfires and smoke from engine bay

    Oil either gets in to cylinder passed the rings from the sump or down the valve guides. If plug is soaked in oil then unlikely to be valve guides. Check the compression on offending cylinder, could be a broken ring or excessive bore scoring/ wear.
  3. T

    Paintwork pricing

    Resprayed my Ford Anglia in 2K earlier in year in spruce green with white roof. Good few coats of primer were required and looking back I definitely didn't spend more than £250 on painting materials at my local supplier. So £500 estimate for materials should leave you with change. Most of...
  4. T

    Welding

    https://www.mig-welding.co.uk/forum/ Good site for general welding advice / tips / etc
  5. T

    Welding

    Ah, a good way to explore then and learn a new skill set. Always lots of cheap second hand "hobby" type mig welders about when you feel the need to have a go. Seems that a lot of people buy them then, finding its not as easy as it looks , and a bit of a steep learning curve a swell so they...
  6. T

    Welding

    Stick welding not really practical for car repairs, more suited to steel fabricstion / site welding where thicker steel sections are used. Your first welds are unfortunately sat on top of the steel with no penetration. Mig / Tig welding is the way to go really for car stuff with mig being the...
  7. T

    Epas converson

    Thanks for your reply and assistance. Currently car runs with electro/hydraulic system which works just fine, however, as the car is solely for sprints/hillclimbs thought while the car is stripped for rebuilding I would alter it to fully electric thus doing away with the potential for any...
  8. T

    Epas converson

    Hi, interested in going down this route. Do you have any details of the wiring diagram for wiring in the epas ecu to a stand alone ecu? Cheers, Colin
  9. T

    Coolant expansion bottle?

    Hi, where did you get your MEHA expansion tank from? (can't see a link) Cheers, Colin
  10. T

    Refining vvt activation rpm standalone.

    Don't forget the 197 head is not just a straight swap as it need to be modified to work on a 172 block.
  11. T

    F4R Flywheel Machining/Skim

    Refacing a flywheel for the first time to remove minor wear where you are removing a few thou of material would be extremely highly unlikely to cause any failure due to it adversely affecting the structural integrity of the flywheel. Can't see it causing a problem really. Off on a tangent. I...
  12. T

    weird clutch problem

    An lot of clutch problems can actually be caused by "driver related" issues, rather than problems with the actual clutch itself. Not saying it is the case here, however, if a clutch is used without any "mechanical sympathy" or the wrong one fitted for its purpose then they don't like it.
  13. T

    Matched Inlets worth doing along with group n timing ?

    Group N timing on its own will give a slight increase in bhp so every little helps as they say. I've seen some very optimistic claims for bhp increase due to fitting matched inlets. In reality don't think any minor increase gained (if any!) is worth the effort and cost. Then again its not my...
  14. T

    Megane f4r engine rebuild manual

    Search "torque settings" on this site, loads of relevant information available.
  15. T

    Clio 172 New spark plug thread

    In an ideal world the head should be off to repair although you can actually successfully repair plug threads with the cylinder head in place if you know what you are doing, again not for the faint hearted or keyboard warriors. In the long term if using helicoils as the repair they can tend to...
  16. T

    Catcams timing tools

    Never used one, however looks pretty straightforward tool set up. PMS usually supply a decent set of guidance notes with bits of their kit.
  17. T

    OEM Main Bearings vs Race Main Bearings

    Thanks for the swift reply. Have used oil pump that I modified the pressure relief valve on in the past with good results pressure wise, will strip and check tolerances as well. Oil squirt jets have been removed / binned and I will fit new ones. Block was honed and checked out ok for...
  18. T

    OEM Main Bearings vs Race Main Bearings

    Hi, Just building a high spec n/a F4R 172 engine for sprint competition use. In then past I have followed the school of thought of using race standard big end bearings and Renault OEM tanged main bearings which have always been fine with no issues arising. Race mains give a bigger crank to...
  19. T

    Suspension/gearbox

    A normal diff makes going around corners somewhat easier due to the different rotational speeds of inner/ outer wheels. A car with a locked diff wants to more go straight on in a way. Gripper enables you also to get more drive through corner and get on the power a bit earlier.
  20. T

    Suspension/gearbox

    Carefully consider useage before altering/ selecting different final drive ratio. Too short and first gear becomes almost non existent. Ideally you would want a longer first gear ratio, search other posts about this subject for more detailed info.
  21. T

    Suspension/gearbox

    If you are going to use it on the road then Quaife (ATB type diff) is the one to go for as plated diffs are noisy / clunky at low speeds, so much so you would think there is something up with the transmission!! Gripper provides a “full lock” and is therefore much better for a track only based...
  22. T

    Engine dies on hard cornering but restarts immediately??

    Also with this new set up can run the car low on fuel without any adverse issues, due to the additional swirl pot storage. Funnily enough never used to be an issue but only occurred earlier in the year when we put grippier tyres on car. The mysteries of motorsport, G forces in particular.
  23. T

    Engine dies on hard cornering but restarts immediately??

    Had this issue even with new uprated fuel pump fitted. Didn't think initially down to fuel starvation due to original layout of in tank fuel pump set up. Tried filling tank to over half full - no different. Was ok on short bends on track but long sweeping ones a different story, was stuttering...
  24. T

    Suspension for Road Going Sprint / Hillclimb

    Cheers for information, the regs are certainly difficult to interpret at times. Funny isn't it as the roll centre mods help to align the suspension geometry back to standard in a way but can be deemed as illegal. Ah well onwards and upwards.
  25. T

    Suspension for Road Going Sprint / Hillclimb

    I know its a nightmare to interpret the regs and opinions can differ, with the MSA being the ultimate arbiter, but looking specifically at the regs in relation to rose joints (spherical bearings) the regs would appear to say that you cannot replace "bushes" with spherical type bearings (only...
  26. T

    Suspension for Road Going Sprint / Hillclimb

    In relation to the roll centre kit are you saying that under MSA regs for Road-going Series Production Cars you cannot fit .
  27. T

    Suspension for Road Going Sprint / Hillclimb

    Go for the Gripper and alter the final drive ratio, this alone will lower times if you learn to drive it to get best out of diff. ARB would be way down the list. Best permitted tyres you can afford. Uprated lowered springs will assist unless you can run to a decent set of coilers for front...
  28. T

    Which Engine Mods - Pre Turbo Fitting

    Chasing marginal gains which won't assist a turbo upgrade is an easy way to drain your bank balance for no return in the long run. As stated above lightening the car is a good "free" way to deliver more power. Just sit tight until you can go for the turbo upgrade, good cost effective "bang...
  29. T

    172 Sump Baffle

    Cheers, think I will also machine in a threaded blind hole to the "plug" in case I ever need to extract for any reason in the future,
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