My mk2 Rally car - Duratec power

[JonSegger]

Re: My mk2 Rally car - Duratec power

Okay, thanks. What does it rev to about 7500-8000rpm?

Yep. I think rev limiter is 8000 rpm. (I did notice last time out that the shift light wasn't working, but that it set at 7200, I believe).

[rallyrob]

Re: My mk2 Rally car - Duratec power

Cheers.

It's a 4.6 now. (It was originally a 5.1, but that was too low geared.) It's on 15" wheels at the moment too, which gears it up a little for the long Snetterton straights.

Okay. Even with it revving to 8000, the 15" wheels must definitely help it on the straights too.

[JonSegger]

Re: My mk2 Rally car - Duratec power

Okay. Even with it revving to 8000, the 15" wheels must definitely help it on the straights too.

Yes, for sure, definitely helps. Worth mentioning that it has a Quaife 60G too, which did have a tall 1st gear when I originally bought the gearbox (2.057). I subsequently swapped the diff from a 5.1 to a 4.6 diff and, combined with 15" wheels, it was a struggle to pull away in 1st and putting a lot of strain on the clutch. I had the gearbox serviced recently and changed 1st gear to a 2.4 ratio instead. It is much better now.

[Forest_rallying]

Re: My mk2 Rally car - Duratec power

I have an Escort with a little 2.0 Pinto fitted and I have the same diff ratio and 15 inch like yours Jon. It’s fitted with a Quaife type 9 gearbox fitted with a 2.01 first and Race ratios and despite me making the engine more tractable I feel first gear’s just about acceptable on the flat but too tall to set off on a hill. The engines fitted with a sintred clutch plate which also doesn’t help things either on take off. I had a spare std type 9 so I have decided to fit that with a Tracsport kit with a 2.48 first gear and give that a try.

[JonSegger]

Re: My mk2 Rally car - Duratec power

I have an Escort with a little 2.0 Pinto fitted and I have the same diff ratio and 15 inch like yours Jon. It’s fitted with a Quaife type 9 gearbox fitted with a 2.01 first and Race ratios and despite me making the engine more tractable I feel first gear’s just about acceptable on the flat but too tall to set off on a hill. The engines fitted with a sintred clutch plate which also doesn’t help things either on take off. I had a spare std type 9 so I have decided to fit that with a Tracsport kit with a 2.48 first gear and give that a try.

Yes, I checked the clutch when I took the gearbox out to get it serviced and the 1st gear ratio changed. There were cracks in both plates and the cover had broken - so I had to replace the clutch too. I assume that 1st gear being too tall was putting extra strain on the clutch. It was the same as you described - just about able to pull away on flat ground, but any sort of a hill start just didn't feel good. Much better now with the higher ratio/lower gear.

[rallyrob]

Re: My mk2 Rally car - Duratec power

Blimey, yea that clutch was bad, wasn't it!

[JonSegger]

Re: My mk2 Rally car - Duratec power

Blimey, yea that clutch was bad, wasn't it!

Yep. A good job I got to it when I did I think. That cover would have done a lot of damage if it had properly let go.

[Miniliteman]

Re: My mk2 Rally car - Duratec power

If it's a rally car why not fit a cerametallic clutch?

[JonSegger]

Re: My mk2 Rally car - Duratec power

If it's a rally car why not fit a cerametallic clutch?

That's what it is - twin plate cerametallic. I went for this one (and the associated cover): https://cbradleymotorsport.co.uk/pro...-1x23t-x-5-6mm

[rallyrob]

Re: My mk2 Rally car - Duratec power

That's what it is - twin plate cerametallic. I went for this one (and the associated cover): https://cbradleymotorsport.co.uk/pro...-1x23t-x-5-6mm

I know there's probably no warranty as such but I might inclined in send photos of that directly to ttv. I suppose it's been in the car a fair while though hasn't it.

[JonSegger]

Re: My mk2 Rally car - Duratec power

I know there's probably no warranty as such but I might inclined in send photos of that directly to ttv. I suppose it's been in the car a fair while though hasn't it.

That's the new one. The old one was AP plates and a Helix cover.

[Miniliteman]

Re: My mk2 Rally car - Duratec power

I know there's probably no warranty as such but I might inclined in send photos of that directly to ttv. I suppose it's been in the car a fair while though hasn't it.

New one is a cerametallic clutch from TTV; old one is a sintered race clutch from AP.

[rallyrob]

Re: My mk2 Rally car - Duratec power

That's the new one. The old one was AP plates and a Helix cover.

My apologies, yes I should have looked at the photos better. I realise now it was the old one and the TTV is the new one.

[JonSegger]

Re: My mk2 Rally car - Duratec power

My apologies, yes I should have looked at the photos better. I realise now it was the old one and the TTV is the new one.

no worries. My fault, I didn’t actually explain it very well.