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If the manifold has o rings on the flange face you don't need a gasket. The o rings create the seal.
Spray some chain lube around the potential leak areas. If the idle drops, then picks up, you've found the area of the leak.
That sounds like a idler pulley has failed or the aux belt tensioner is seized and made the belt come into contact with the cambelt. That'll have fucked the head mate.
It's leaking because the jubilee clip isn't tightening the full 360 degree circumference. You need a jubilee clip with the insert to apply the pressure all the way around the surface area, or you need a cv boot/ear clip.
The grp n timing alters the dynamic compression ratio, so technically an old belt will be working a bit harder too.
With the basic induction and exhaust mods though, it's the best bang per £ you'll ever get from an f4r. I loved my old cup on grp n and they do/did a tool for the mk3 too. That...
It's a bit moody re-timing it and not replacing the belt mate tbf. If anything fails after the timings been adjusted, the person who did it will be held responsible. Even if it's f**k all to do with them!
Lol!! No worries mate.
I think it was done as I was due out on the piss and had 20 minutes to get the box apart and ready to go out! My mates said it couldn't be done...........
I pretty much could've driven down to yours with all the stuff I need in the car and rebuilt your original box in less time than it's taken them bell ends to send it out!! And that would include the time it takes for parts to arrive from renault! Lol
I think everyone thought I was a liar when I said just how much of an improvement it makes tbh mate. Who's got egg on their fuckin face now then eh?
Idle speed is easy to fix!!
Well that looks like it's either teeth off a gear, or it's a tooth off a synchro hub. Can't really see it well enough to say for sure.
If that box has had that amount of metal going through it, expect damage to each individual gear and bearings.
Personally I'd be replacing all the bearings...