Originally Posted by
zetaboostboy522bhp
That's a cracking figure out of a zetec , how accurate are rolling roads compared to engine dynos etc in terms of bhp , is it corrected etc and is that whp or flywheel hp . Either way that's doing some good numbers.
Mat do you know the full spec or is it all hush hush?
Just trying to get an idea of a happy medium between banging shit load of boost through the engine or having extra work done to gain hp in areas where others haven't bothered like larger valves , extra porting , custom cams etc etc.
If you can get 700 bhp from a head with standard valves with mild porting etc then that would be great. What I don't want is to shit myself every time I turn the key .
What head bolts do they use or are they standard Allen head 12.9 m12 bolts? , are they just drilled and retapped etc and are they using a thick clamping washer for extra clamping force . What head gasket are these lads running ?
Cheers Paul
Clarke is my best mate, I can tell you pretty much anything about the car.
It's always been on a Dyno Dynamics rollers, known for accuracy. It's corrected flywheel power.
It's a drag engine, so doesn't need response etc... and is essentially a huge turbo pushing huge boost through a breathed on Zetec. The head is pretty heavily ported and has some tricks, which I know are secret, but it is 100% on standard valves.
I know Lee at Devil Developments has built a few Zetecs making 500-600bhp on standard valves and these are road engines.
This engine has done numerous dyno runs and quarter mile runs and never misses a beat. I know that's not much compared to what a track engine might see, but it certainly isn't a case of praying it stays together each time the key is turned etc...
The block is drilled and tapped and the bolts are regular 12.9 M12s. The washers are from an ARP kit. Everyone uses standard Ford headgasket.