"150" rolls off the tongue rather nicely! Several people are having big reliability issues with numbers beyond 130.I can tell you from personal experience after recent mods to a customer's car:a 1.9L with a GOOD exhaust, ported head, and 15 psi out of a Garrett T2 makes for a very satisfying, reliable drive. Add a Giles pump, intercooler and about more 3 psi, and that would really be one helluva car. not 150 hp, but a solid reliable, really-fun-to-drive car.
AFAIK the only "big" reliability issue I had with 150whp-plus was compression leaking to the coolant ports. If the head will be ported, which requires that the head be removed from the engine, then it can be o-ringed quite affordably. That may eliminate the major reliability issue, but who knows what other problems could pop up... Dr. Diesel, can you list the other reliability issues you experienced with over 130 HP? One more issue I can think of is 020 transmission failure. It's quite common for MK2 8v turbo gassers to upgrade their transmissions.JetPo, 12mm sounds a little excessive. I beat a MK3 VR6 (172bhp) with only a 9mm pump, done up by Giles, and I still had the coolant overpressure problem. Get your head o-ringed and stick with 9mm if you're going to get your pump done by Giles, who does a great job. If you must upgrade, go with 10mm or 11mm, which have better high-RPM tolerance than the 12mm (a few 12mms are rated max. 2,150 RPM by Bosch).
Iirc a GT20 runs any where from $600 - $1000, I don't know of any vehical that uses them as there OEM turbo, not to say that there isn't one, just that I don't know of it.
Is a giles pump more economical??? of course when driving normal, how much?
By putting a passenger performance camshaft, will i reduce my egt's enough to run a k24 safely, because this car is my daily, so i want something that i can count on. Oh, and by the way, is the block big enough to go get , lets say 2.0L.....
My IDI outperformed a MK3 VR6 (172bhp) with only a 9mm pump done up by Giles, and I still had the coolant overpressure problem. Get your head o-ringed and stick with 9mm if you're going to get your pump done by Giles, who does a great job. It will barely flow enough fuel for 20 PSI and a ported 1.9 head.
Quote from: maloneMy IDI outperformed a MK3 VR6 (172bhp) with only a 9mm pump done up by Giles, and I still had the coolant overpressure problem. Get your head o-ringed and stick with 9mm if you're going to get your pump done by Giles, who does a great job. It will barely flow enough fuel for 20 PSI and a ported 1.9 head.Mark I think that you should have mentioned, as there are alot of new face's here that don't realize that, you were runing unitercooled and in a MK3 2dr full interior, when you out ran the mk3 vr6. It was a pretty even comparison as they were the same car just differernt motor. :wink: