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RE: new engine
I just ordered a 10v dual knock sensor motor for my 86 4kcsq and paid $1600
versus average of $4500 I was quoted for the 20v motor. I feel that with
some simple mods - chip, spring, exhaust, intake, possibly oversize exhaust
valves - it should be about to put out about 250hp running 1.8 bar boost.
With the weight advantage (600 lbs), shorter gearing, K24 turbo it should be
much quicker than my chipped 5kcstq, which already hauls pretty well on the
freeway in my opinion. With an adjustable wastegate and a little more boost,
280 hp should be attainable for track use. I've never had the opportunity to
drive a 4kcsq with more than 120hp, which at this altitude (6000 ft) is
slower than most SUV's!
So, the reason I choose the 10v dual knock sensor motor for the conversion
over the 20v was cost, and over the earlier 10v was the K24 turbo, dual
knock sensors, slightly higher compression, and lighter flywheel. I also
wonder whether the 20v conversion is really simpler than the 10v?
Hope I have no regrets. Even with the 10v motor, it's an expensive
93 BMW K1100RS (for sale, to pay for said conversion)
p.s. Pat - how do you like the Yoko A520's and what size are you running?
From: Pat Martin [mailto:email@example.com]
Sent: Monday, January 11, 1999 2:09 PM
To: Dan Hamren; quattro list
Subject: Re: new engine
I would have to disagree with you regarding 10v vs the 20v. You have to
look at potential for power. Since it will probably get some mods the 20v
has a large advantage here. For the same hp the 20v is not stretching as
much as the 10v.
It depends alot on what he wants. If you want to make it fun but not a
rocket than the 10v 2knock motor is the best. If you want a supercar put
the 20v in. My opinion is that if you are going to do the swap go for the
gusto. After doing it on my 4kq I would do the 20v conversion if I ever did
it again. Do I regret it, HELL NO. But I do wish I would have thought it
through and driven a 10v a little more. The other bonus is the 20 valve
conversion is an easier conversion anyway.
Riding in 400hp 4kq's ruined me.
864000csq turbo, 2 1/2 cat back, H&R-Boge, MC and loving it. Drilled and
stopping it. Koenig Cobra 16x7 with Yokohama A520's turning it, K&N and
uh..., Soon: Hella's lighting it.
84 4000sq AKA: The beater.
95 subaru legacy
>As for the engine, I would go for the
>I5 10v with the k24. The other one is too much money, and you will get
>almost as much power with the k24 turbo(ie more boost early in power
>band) Plus ... you have to get it put in, and thats going to cost a
>Good luck, Make sure they use a reputable shipper, I bought a fender
>and they delivered it by some wierdo with a beat up pickup truck, came
>in scratched and dented.
>Dan Hamren 87 5000 avant q