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Re: Mk1 F4R/172'd Track Car Project Yeah, might be worth looking into. I already have a drivers side hub spare that I always take to trackdays with me incase of bearing failure etc, too bad it was passenger side on the day. Il probably end up fixing the hub with a new bearing/stub considering...

Well its more of a one off..... 172 bottom end with the 225 internals to keep the 172 box and the F4RT head/turbo setup on aftermarket management :)

Re: Mk1 F4R/172'd Track Car Project Yeah, the thing is though - 12/13 trackdays last year and over 10k miles in total and its never happened before? It can only be down to the hub being worn or loose bolts somehow really... I was considering it a while back to make it easier when changing...

Re: Mk1 F4R/172'd Track Car Project Well, they are taken on and off alot (the amount the cars in bits) and every trackday wheels are swapped to the Superleggeras etc, so it could be related to that BUT the other side was still tight and so were the backs, which are taken off just as much...

Re: Mk1 F4R/172'd Track Car Project Either the hubs threads were previously f*cked somehow, or they had come loose some other way, I have no idea how its happened which is quite worrying! Its never happened before, and I only did the same as I always do with torquing them up, etc.

Just go to a local motor factors and ask for high temp silicone sealant/gasket - will do the job fine

I use cheapo high temp black silicone sealant from the motor factors - £3 for a tube that fits into a caulk gun. Rated to 350deg+ or something, works perfectly and never had a problem. Whereas the firegum/paste s*hite just cracks and starts blowing

I use the cheapest 10w40 I can find, just under £7 for 5 litres. Used it all last year, 10k miles and 12 trackdays at 6000rpm+ all day long, didnt even burn half a litre throughout the year.

You are correct - but it was slightly out of focus - here it is anyway :) And a few more...

Re: Mk1 F4R/172'd Track Car Project Properly wierd as I ran those wheels for 3/4 trackdays last year, and then the Williams wheels before that and never once had an issue! The threads were completely f*cked in the hub anyway, ive got hold of a spare anyway thats being machined today :)

Re: Mk1 F4R/172'd Track Car Project Fuel pressure reg had been pissed around with and he ended up getting det at high RPM, blowing a hole in a piston and ruining the block :dapprove: No problem - Maybe Anglesey, we'l see!

Nice pics, was a good day ignoring the problems! He was running PE2's all round Tigger... Too bad they missed the rest of my car, lol. Also a shame they were not taking pics in the afternoon when we had those few laps!

Re: Mk1 F4R/172'd Track Car Project Yeah they were fresh, although they had been fitted a few times at home - all the powdercoat had come off round/on the bolt taper/seats - so im quite confident it isnt that :dapprove:

JESUS @ the price, lol.

7 month* lol

Re: Mk1 F4R/172'd Track Car Project Right then - Update time. Before FCS I set about tidying up some bits on the car. The main one was finding some sheets of grip-tape big enough to cover the floor in the shape of a floor mat inside. I didnt want to use a normal mat as it would just slide...

Sure, if you want the details etc just drop me a PM sometime

RTOC, its their national meet/day - plenty of tracktime as they rent the circuit for the day. Only £85, everyone usually camps the evening before/after, few of us did it last year was a good weekend

Cadwell 7th & 27th July, Mallory 14th August, Oulton 1st September :)

Yeah, hopefully. Will have a look over it all tomorrow. Also, I bet I could probably get two short braided lines made up with M10 female on one end and M12 male on the other if there are no adaptors easily available which should sort the fitment issue if it does end up working/fitting

What happened, brakes not release? So I guess if the servo is adjustable it could just be wound in to set the correct length for the master cylinder allowing it to release fully?

I see, that makes sense. So as im pushing the 172 master cylinder into the servo, the resistance im pushing against could be the pushrod of the master cylinder and not the servo itself, meaning the brakes would not be fully released?

Yeah, the circuits now make sense - cool. I was just going to connect up the lines as they were, so that should be fine. Well, thats if I can find any sort of solution for the fitment M10/M12 etc. When you say to blow through the reservoir ports, what am I checking for? Il check the depths...

Nice pics :approve:

At the very end it sounds like is bogging/missfiring to f*ck then Andy says turn it off I think! Was certainly a mess when he took the head off :(

Il get a few pics of them both next to each other from above tomorrow for comparison... From the face where the seal is the amount of rod showing and the length of the housing differ, but the overall length is the same. Its hard to explain, but when you fit the cylinder to the servo you have to...

Could not believe it when it happened!

It seemed to fit into the servo fine, it was sat out by around 5mm and had to gently push it to seat it fully (like pushing against a weak spring)... The big fat bit the rod comes out of is not as long as the Mk1 item, but physically the two are the same length from the bolt mounting/seal...

Its got chunks missing out of the center bore where its hit I think - bolt holes look f*cked too, guess they would have been though if they have come loose and been spinning. I think I better keep an eye out for another single wheel!

Yep 100%. Mk1 lines screw into the rear two holes perfectly...the front two holes are a bigger thread, M12 more than likely but ive no idea why the f*ck they are, seems pointless