Series 1 Intercooler. working well, VIDS on page 11. - Page 15 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 02-24-2008, 11:18 PM   #141
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They're twin-screw roots with a 60 degree helical twist. The intercooler has to be placed between the power-adder and the manifold, which means raising the supercharger........until now.

Raising the supercharger adds cost in custom fuel rails or injector spacers. I avoided that as well. My total cost incurred to date is only about $450. Tossing out my 'errors' this can be done for $400, but with a HUGE amount of fabrication, and a machine shop.
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Old 02-24-2008, 11:53 PM   #142
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Eaton, Roots type.

Looking good Bill. If you are dropping temps 30*F that equates to about a 10 hp baseline gain for you plus it opens up room for KR free timing and boost for even more hp.
My guess is about a 30 hp gain.
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Old 02-25-2008, 12:48 AM   #143
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Well fellers, it'* a bust. I'll start taking it off after final testing tomorrow.


























































Kidding. She'* a winner for sure. I'd say this can stay long-term:



50 degree F ambient temps.

Cruising at 65mph with cruise set, Intercooler runs 15 degrees cooler than without.

Extended half-boost runs (5 miles at a time) in second gear at 65mph drops 20-25 degrees.

1/8 mile WOT sprints drop 30-35 degrees.




And that'* still full of micro-bubbles. The pump stuirs the **** up good in there. Chops them bubbles up and blends them well. In time, they'll all be gone and it'll be more efficient.


The reason high boost runs show a bigger gain is primarily because that'* the only test I ran that actually flows ALL the air through the core. The rest of the time I was at least partially bypassed, which actually misses the core.

My GOAL all along was 30 degrees. I'd call it a success (the Admins know this from a hidden topic from some time ago) if it achieved 20 degrees (considering the cost, that'* not bad). I'm sitting right now about half the efficiency of the ZZP SSIC which is all I really need, and why I could get away with this. I ran a 2.2" pulley last year with zero KR (but chose the 2.3" and more timing for competition). This should be all I need to run the 2.2" with more timing, or 2.0" pulley with the same timing as last year.
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Old 02-25-2008, 12:53 AM   #144
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A bust..im thinking...aw **** you hydraulically locked your new motor and im gunna have to drive all the way back down there to help yank it ..again..in the off season..but i can save my miles and money for July instead..

Bastid
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Old 02-25-2008, 12:57 AM   #145
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Great news
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Old 02-25-2008, 01:19 AM   #146
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Sucker came a long way from when you saw a few parts laying around here Paul.
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Old 02-25-2008, 01:21 AM   #147
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How about an estimate of how many hours went into it since then.
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Old 02-25-2008, 01:27 AM   #148
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Say 4 hours of machining, but there were two of us at it for awhile, so 6 hours of machining. Add to that, about a dozen 2-hour stints farting around with parts and fitment.

Probably another 12 during the week Pdad and I had to put it together. But that doesn't count trips to the hardware store, hours of research, and tons of thinking time. I probably have a good 2 weeks with no sleep in this from start to finish.

To duplicate it again (having done it) I'd estimate two weeks start to finish. That'* every afternoon after work and both full weekends.
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Old 02-25-2008, 01:28 AM   #149
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In other words..a Shiat load of time lol
We worked on her pretty much all weekend...but it goes by fast when you are with a ton of other people having fun at the same time.
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Old 02-25-2008, 01:30 AM   #150
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But we didn't really touch the intercooler. Pdad did all the top end motor work the next week, which freed me up for the final fabrication work. And there'* a ton more involved than the pics here and in the meet topic show.
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