Lone Star 1 Posted August 22, 2001 Share Posted August 22, 2001 Hey guys I had a wild thought going on for quite some time now, and thought I would express it here and see what everone thinks. The exhaust manafolds on my LS1 have 1/2" pipes that turn up and have caped flanges. These were supposed to have air lines hook to them from an air pump to help with emission controls. Could I pipe this exhaust to a small turbo that would make about 2 PSI boost at WOT. I could adjust the exhaust flow throught the turbo by adjusting the back presure in the regular exhaust system. Would this be posible and would 2PSI boost be to much for a motor with 10.2 to 1 compression ratio? What kind of HP would this add to a 300 HP motor? Well I told you it was a wild thought. Quote Link to comment Share on other sites More sharing options...
scottyMIz Posted August 22, 2001 Share Posted August 22, 2001 Hey lone star i messed with a turbo on my 5hp briggs engine on my racing go kart and at full throttle it would only make 1psi of bost and it was just enough to make the engine run.Chances are that it will make no difference unless you turn up the boost more.It sounds like a good idea i just thought that i'd tell you what i have expirenced with my turbo application. Quote Link to comment Share on other sites More sharing options...
Drax240z Posted August 22, 2001 Share Posted August 22, 2001 Trying to think about this with an open mind, however I can't see the marginal gain running only 2 psi really being worth the effort. Likely you'd get similar gains by advancing the timing and running higher octane gasoline. Not to say that it can't be done, but how much easier is it to install this system than a full blown turbo system? Quote Link to comment Share on other sites More sharing options...
Lone Star 1 Posted August 24, 2001 Author Share Posted August 24, 2001 Thanks for the input guys, I have no turbo experance. Just a wild thought, hopeing to make 50 are so HP without modifing exhaust manifoldes are messing with the compression. Quote Link to comment Share on other sites More sharing options...
jeromio Posted August 24, 2001 Share Posted August 24, 2001 Well, if you have any dollars (about 3000 of them), there's a couple of kits available for turbo'ing the LS1. Stock internals - everything bolts on. And the kits are designed for the extremelely tight FBody engine bay, so I'd guess fitment would not be much of a problem. They all seem to run 6-7 PSI and add about 100hp. Quote Link to comment Share on other sites More sharing options...
Andrew Bayley Posted August 24, 2001 Share Posted August 24, 2001 A while back, Motor Trend Television did a "Road Test" on a Lingenfelter C5 Vette. Twin turbo incooled LS1 that was rated at something over 500hp in double digit boost numbers. They started off doing a top speed run at some tire manufacturers test track. I seem to remember 220 mph being the magic number. Later in the show, they took the same Vette to a drag strip and tried to break into the ten's. Even after spraying VHT traction compound down 2/3 of the track, the FULL BLOWN RACING SLICKS were still busting loose. Best time was something like 11.0's at 130 mph. I know that sounds cool and all, but what good would all that power be if you can't put it to the ground (no one is going to run full slicks on the street in a C5). Seems kind of a waste. I think Johhny should have spent a little more time redesigning the suspension if he was as serious as he sounded about a ten second drag car. Lone, please don't misinterpret what I just said. If you get 500 - 600 hp out of that LS1, we will be able to find a way to get that power to the ground. No more Vipers problems... guaranteed When do we get started? -Andy [ August 24, 2001: Message edited by: Andrew Bayley ] Quote Link to comment Share on other sites More sharing options...
pparaska Posted August 24, 2001 Share Posted August 24, 2001 quote: Originally posted by Andrew Bayley: Lone, please don't misinterpret what I just said. If you get 500 - 600 hp out of that LS1, we will be able to find a way to get that power to the ground. No more Vipers problems... guaranteed How about a 1/4 mile long rack gear, with pinions on the stub axles - along with a spring and a slider on the track to hold the rack and pinion engaged? Quote Link to comment Share on other sites More sharing options...
BLKMGK Posted August 24, 2001 Share Posted August 24, 2001 Only 50 ponies? Heck a bottle will give you that no sweat. No retarding the spark or changing to colder plugs for that low a boost either. Truthfully though - I've been told that a 50horse NOS shot is barely noticable to the driver. I don't know that from experience though but hope to find out. Bottle would certainly last awhile huh? If you're willing to do the turbos and the cost of it then perhaps consider a belt driven blower too. No turbo heat, no wild plumbing for the exhaust either. 5-6lb would be cake for an ATI, NOVI, maybe even an S-Trim Vortech which ought to be available all over the place used. Brackets of course is the big problem and possibly pullies depending on where the front pulley sits.... Quote Link to comment Share on other sites More sharing options...
Mike C Posted August 24, 2001 Share Posted August 24, 2001 I borrowed an old Marvin Miller 75 horse system for my car about 10 years ago. Dropped it from 14 teens into the 13.40 range. Oh you could definitely tell, especially down low. My buddies car which had crappy heads went from 13.3's to 12.4's and from 99 to 108 mph with the same system. Obviosuly a 50 wouldn't do quite that much, but it is noticeable, especially when all 50 come at 1000 rpm! Quote Link to comment Share on other sites More sharing options...
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