I have been under the assumption that the I5 20v was a 16v with an extra cyl. Are the heads really that different?
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Re: 1990 4cyl20v 90q...DYNO 648hp 508tq
Posted: Fri Sep 09, 2011 7:31 am
by death 4kqt
they are the same, but the 16v is much more plentiful and thus cheaper.
Re: 1990 4cyl20v 90q...DYNO 648hp 508tq
Posted: Fri Sep 09, 2011 7:33 am
by Jiggle_Billy
Mcstiff wrote:I have been under the assumption that the I5 20v was a 16v with an extra cyl. Are the heads really that different?
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You are correct in your assumption.
Price out a 16v vs a 20vt motor for building up. I can get a 9a motor for damn near free, then promptly hit up vwvortex for a pile of aftermarket parts.
I'd be stuck paying a fortune to build up a 20vt I5 when compared to a 16vt
Re: 1990 4cyl20v 90q...DYNO 648hp 508tq
Posted: Fri Sep 09, 2011 7:42 am
by bdcoombs
4cyl ftw
Re: 1990 4cyl20v 90q...DYNO 648hp 508tq
Posted: Fri Sep 09, 2011 7:43 am
by Jiggle_Billy
The sound just isn't the same though....
1990 4cyl20v 90q...DYNO 648hp 508tq
Posted: Fri Sep 09, 2011 7:48 am
by Mcstiff
Jiggle_Billy wrote:
Mcstiff wrote:I have been under the assumption that the I5 20v was a 16v with an extra cyl. Are the heads really that different?
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You are correct in your assumption.
Price out a 16v vs a 20vt motor for building up. I can get a 9a motor for damn near free, then promptly hit up vwvortex for a pile of aftermarket parts.
I'd be stuck paying a fortune to build up a 20vt I5 when compared to a 16vt
I guess you are talking building a 7a for >~350whp. Otherwise I don't see what parts are expensive. From what I can tell the 7a and 9a pistons are the same.
I'd go further but this it getting OT.
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Re: 1990 4cyl20v 90q...DYNO 648hp 508tq
Posted: Fri Sep 09, 2011 7:54 am
by Zerb
a good friend of mine, the kid who did all the welding for this project, has a built 16v in a mk2 with a precision 6262 t3 on tec3 and an sqs trans. should make some power that as well soon here.
Re: 1990 4cyl20v 90q...just got back from DYNO 648awhp!
Posted: Fri Sep 09, 2011 8:26 am
by dspl1236
speeding-g60 wrote:WOOHOO!!!!! 648.....
try driving with THAT on the streets haha....
looks easy
Re: 1990 4cyl20v 90q...DYNO 648hp 508tq
Posted: Fri Sep 09, 2011 8:59 am
by Zerb
once i get some new front tires and an alignment, ill have the gopro charged and recording. :woowoo:
Re: 1990 4cyl20v 90q...DYNO 648hp 508tq
Posted: Fri Sep 09, 2011 11:11 am
by Jiggle_Billy
Time to go pick on liter bikes....
Re: 1990 4cyl20v 90q...DYNO 648hp 508tq
Posted: Fri Sep 09, 2011 11:24 am
by Zerb
i like how you think
Re: 1990 4cyl20v 90q...DYNO 648hp 508tq
Posted: Fri Sep 09, 2011 11:28 am
by Hank
Granted the dyno could be different, but 600whp is about when I started to get a majority of the newer liter bikes. My only loss was to a new piped and ECUed 1000gsxr. He was a couple of lengths to 130 faster than I was. An extra 48whp on top of aerodynamics that aren't similar to a brick should help a bit!!!! Impressive torque as well!
Re: 1990 4cyl20v 90q...DYNO 648hp 508tq
Posted: Fri Sep 09, 2011 11:35 am
by Frank the quattro tank
Mcstiff wrote:I guess you are talking building a 7a for >~350whp. Otherwise I don't see what parts are expensive. From what I can tell the 7a and 9a pistons are the same.
Not quite... assuming zero deck height when assembled, the 7a pistons are about 3.2mm taller than the 9a, due to the 9a's 92.8mm stroke vs 86.4mm for the 7a. The 1.8 Pistons are identical in terms of height, but have the smaller 81mm bore.
1990 4cyl20v 90q...DYNO 648hp 508tq
Posted: Fri Sep 09, 2011 11:45 am
by Mcstiff
Frank the quattro tank wrote:[/quote]
Mcstiff wrote:I guess you are talking building a 7a for >~350whp. Otherwise I don't see what parts are expensive. From what I can tell the 7a and 9a pistons are the same.
Not quite... assuming zero deck height when assembled, the 7a pistons are about 3.2mm taller than the 9a, due to the 9a's 92.8mm stroke vs 86.4mm for the 7a. The 1.8 Pistons are identical in terms of height, but have the smaller 81mm bore.[/quote]
I was referring to strength (cast).
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Re: 1990 4cyl20v 90q...DYNO 648hp 508tq
Posted: Fri Sep 09, 2011 3:53 pm
by Zerb
ShavedQuattro wrote:Granted the dyno could be different, but 600whp is about when I started to get a majority of the newer liter bikes. My only loss was to a new piped and ECUed 1000gsxr. He was a couple of lengths to 130 faster than I was. An extra 48whp on top of aerodynamics that aren't similar to a brick should help a bit!!!! Impressive torque as well!
im hoping my weight helps too. once i get new tires on the front and a proper alignment, im going to finally put the car on corner scales and see what it weighs.
Re: 1990 4cyl20v 90q...DYNO 648hp 508tq
Posted: Fri Sep 09, 2011 5:45 pm
by bdcoombs
the lighter engine and being able to make 600+ is what sold me on a 4cyl. and cars like this.. thanks for the motivaiton
Re: 1990 4cyl20v 90q...DYNO 648hp 508tq
Posted: Sun Oct 09, 2011 6:35 pm
by Zerb
got to run my buddies gsxr 1000 today, up a nice hill at lol. only ran 34psi, noticed later on in the logs that the egt sensor for the ecu was getting a choppy signal and thus limiting the boost controller duty cycle, no biggie we can go again. from a dig next time too. enjoy.
