custom Log mani i'm building
02-13-2006, 06:46 PM
#21
0.5 BAR
Thread Starter
Join Date: Aug 2003
Posts: 127
Re: custom Log mani i'm building
joseph, how will it be dangerous? i'll only be pushing 12 psi boost max.. if i dont get 230 whp then no big deal..
i'm using crome pro, moates ostrich, PLX m300 wbo2 to tune it.
jeff, yeah thats the motor Cesar got from you
i'm using crome pro, moates ostrich, PLX m300 wbo2 to tune it.
jeff, yeah thats the motor Cesar got from you
02-14-2006, 11:11 PM
#22
0.0 BAR
Join Date: Feb 2003
Posts: 0
Re: custom Log mani i'm building
1) In stock 180 hp trim, those IHI's strangle the 2.3's they come on over 5000 rpms. 2.3 liters sounds like a lot of displacement, but they have about the same specific output as a stock LS engine with the turbo removed... maybe a bit less, since I spooled my .60/.48 and my .60/.63 a lot quicker than 2.3T do.
2) Tiny turbines and dainty turbine housings are not safe. The engine cannot handle excess heat, and the only way it gets out of your engine before it melts it down is through the exhaust. Which can't flow against the tiny IHI restriction. Heat builds up and can't be shed effectively, detonation sets in quick.
3) Tiny compressors worked at or a bit past their maximum blow really hot air. So now you're shoving more heat into the engine.
I was serious, 230 whp the smallest I'd go (looking for safety and reliability) is OEM T3 turbine, preferrably .63 AR. Not that AR with OEM T3 means that much since they have a very small "stage 1" turbine wheel that can only pass so much exhaust, but sometimes the small things add up.
With stock LS cams, significant boost before 4000 rpms is nice, and makes things easy to drive, but it's not particularly fast until 4-6500 range. On the other side of the coin, significant boost before 4000 rpms also leaves you open to a lot of high combustion "dwell time," for lack of a better word. Instead of the heat staying in the exhaust, it has enough time to bleed a significant amount into the engine itself... thermally loading everything and setting you up for detonation/engine death. Time is one of the unholy triumvirate of detonation. This is why high rpm boosting allows small engines to crank out some power and still be really, really reliable. You won't hit 230whp in the lower to mid rpm range without shitcanning a stock LS, IMO, you have to rev it. *shrug*
One of the D15/D16 boys would love your IHI, if you were slick you wouldn't have to fork out much more cash to upgrade. It *is* the biggest factory IHI (I'm aware of).
Hell, if Jeff Frank is having good luck with those $5/pop SSAC T3/T04E's, that's the route I'd go. Stage 3 turbine wheel/housing, and feel free to go with a smaller AR turbine if you're that worried about spool. It'll ------- rip, you can get some exhaust (heat) flow past the larger "stage 3" turbine wheel, and the sexy bitches will want to ---- you AND blow you, instead of just blow you like if you run the IHI.
2) Tiny turbines and dainty turbine housings are not safe. The engine cannot handle excess heat, and the only way it gets out of your engine before it melts it down is through the exhaust. Which can't flow against the tiny IHI restriction. Heat builds up and can't be shed effectively, detonation sets in quick.
3) Tiny compressors worked at or a bit past their maximum blow really hot air. So now you're shoving more heat into the engine.
I was serious, 230 whp the smallest I'd go (looking for safety and reliability) is OEM T3 turbine, preferrably .63 AR. Not that AR with OEM T3 means that much since they have a very small "stage 1" turbine wheel that can only pass so much exhaust, but sometimes the small things add up.
With stock LS cams, significant boost before 4000 rpms is nice, and makes things easy to drive, but it's not particularly fast until 4-6500 range. On the other side of the coin, significant boost before 4000 rpms also leaves you open to a lot of high combustion "dwell time," for lack of a better word. Instead of the heat staying in the exhaust, it has enough time to bleed a significant amount into the engine itself... thermally loading everything and setting you up for detonation/engine death. Time is one of the unholy triumvirate of detonation. This is why high rpm boosting allows small engines to crank out some power and still be really, really reliable. You won't hit 230whp in the lower to mid rpm range without shitcanning a stock LS, IMO, you have to rev it. *shrug*
One of the D15/D16 boys would love your IHI, if you were slick you wouldn't have to fork out much more cash to upgrade. It *is* the biggest factory IHI (I'm aware of).
Hell, if Jeff Frank is having good luck with those $5/pop SSAC T3/T04E's, that's the route I'd go. Stage 3 turbine wheel/housing, and feel free to go with a smaller AR turbine if you're that worried about spool. It'll ------- rip, you can get some exhaust (heat) flow past the larger "stage 3" turbine wheel, and the sexy bitches will want to ---- you AND blow you, instead of just blow you like if you run the IHI.
02-15-2006, 10:13 PM
#24
0.0 BAR
Join Date: Feb 2003
Posts: 0
Re: custom Log mani i'm building
I thought the SSAC turbos went for $5/pop on eGay or some ----?
Internet Legends tell of Jeff Frank having four hundred free SSAC .57 trim T3/T04E littering his shelves... he is a dark and hungry God, but if you appease him he might kick you one for $4 shipped.
:P
Internet Legends tell of Jeff Frank having four hundred free SSAC .57 trim T3/T04E littering his shelves... he is a dark and hungry God, but if you appease him he might kick you one for $4 shipped.
:P
02-16-2006, 01:32 AM
#25
0.5 BAR
Thread Starter
Join Date: Aug 2003
Posts: 127
Re: custom Log mani i'm building
he doesnt wanna sell any 
i've also got a KKK 3LDZ turbo from a 77 porsche 930 sitting here.. t3 exhaust flange.. says .63 on the turbine housing.. not sure what the compressor size is.
didnt really want to use it tho.. figure its older turbo so efficiency not as good..
i've also got a KKK 3LDZ turbo from a 77 porsche 930 sitting here.. t3 exhaust flange.. says .63 on the turbine housing.. not sure what the compressor size is.
didnt really want to use it tho.. figure its older turbo so efficiency not as good..
02-16-2006, 07:50 AM
#26
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Join Date: Feb 2003
Posts: 0
Re: custom Log mani i'm building
I had a 3DLZ, passed it to a friend. It's KKK/Schwitzer tag team, actually. And about as old as a straight T3, so don't worry too much.
I think she's good for ~300 whp, and the turbine wheel is a ---- ton bigger than the IHI you have now so she'll breathe enough to do that power if you ever get antsy. I say rock that on your way to 230, and beyond.
I think she's good for ~300 whp, and the turbine wheel is a ---- ton bigger than the IHI you have now so she'll breathe enough to do that power if you ever get antsy. I say rock that on your way to 230, and beyond.
02-16-2006, 02:28 PM
#28
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Join Date: Feb 2003
Posts: 0
Re: custom Log mani i'm building
A friend was supposed to bolt it to an LS, I never heard back from him about it.
I know a couple Porsche guys, we can probably infer from what size engine it comes off and where it spools stock. I'll ask.
I know a couple Porsche guys, we can probably infer from what size engine it comes off and where it spools stock. I'll ask.
02-16-2006, 03:16 PM
#30
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Join Date: Feb 2003
Posts: 0
Re: custom Log mani i'm building
I'm your average intelligent guy, obsessed with cars, 5-8 years older than most of you. Nothing I'm doing a lot of you guys won't be at some point.
Look at the tech articles in Hot Rod vs the ---- found in most import magazines... the import magazines have gotten better as the average sport-comp enthusiast gets older and demands real information, but there's still a gulf of 20 or so years average age between Hot Rod subscribers and import magazine generica.
Look at the tech articles in Hot Rod vs the ---- found in most import magazines... the import magazines have gotten better as the average sport-comp enthusiast gets older and demands real information, but there's still a gulf of 20 or so years average age between Hot Rod subscribers and import magazine generica.
