Turbo 5.3 in German Iron?
02-24-2011, 04:28 PM
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Turbo 5.3 in German Iron? I've been waiting to save up some cash on a pair of headers for my build, the problem is that N/A swap headers are stupid expensive (Read 2k). This is going in an LSx swapped BMW M3.
The alternative is to slap a turbo on using parts I already have laying. It may be more of a headache but building the car is 75% of the fun!
The setup that I am thinking about is a small-ish single, something like the following:
*Stock Iron Block 5.3 - Thought about the 317s I have laying around but figure that is lowering the compression too much.
*ARP Rod Bolts
*Otherwise bone stock with an LS1 intake.
*Backed by a G-Force built T5 (will be replaced with a TKO) and Spec Stage 3 Clutch (Lets not start the T56 debate)
*T70 with a .68 a/r. (This for faster spooling and lower HP)
*Truck manifolds modified with 2.5" V band fittings
*2.5" Hot side plumbing to a merge collector into a T4 flange. (some people say that you're better off with 2.25" pipe for greater velocity and faster spool. any truth?)
*Tial 38mm Waste Gate
*3" Down pipe out the back of the car
*2.5" Cold side piping through a cheap intercooler I have laying around to the intake.
*Tial Q BOV
What do you all think of this set up?
The goal is 400-450 usable hp. I do NOT want a dyno queen. This car is a street car with road course action in it's future. I do not want a laggy setup and only feel that I need about 7-8 PSI to make this car happy. I will be VERY limited in the traction department so more is a waste at the moment.
www.lsxe36m3.com
The alternative is to slap a turbo on using parts I already have laying. It may be more of a headache but building the car is 75% of the fun!
The setup that I am thinking about is a small-ish single, something like the following:
*Stock Iron Block 5.3 - Thought about the 317s I have laying around but figure that is lowering the compression too much.
*ARP Rod Bolts
*Otherwise bone stock with an LS1 intake.
*Backed by a G-Force built T5 (will be replaced with a TKO) and Spec Stage 3 Clutch (Lets not start the T56 debate)
*T70 with a .68 a/r. (This for faster spooling and lower HP)
*Truck manifolds modified with 2.5" V band fittings
*2.5" Hot side plumbing to a merge collector into a T4 flange. (some people say that you're better off with 2.25" pipe for greater velocity and faster spool. any truth?)
*Tial 38mm Waste Gate
*3" Down pipe out the back of the car
*2.5" Cold side piping through a cheap intercooler I have laying around to the intake.
*Tial Q BOV
What do you all think of this set up?
The goal is 400-450 usable hp. I do NOT want a dyno queen. This car is a street car with road course action in it's future. I do not want a laggy setup and only feel that I need about 7-8 PSI to make this car happy. I will be VERY limited in the traction department so more is a waste at the moment.
www.lsxe36m3.com
02-25-2011, 10:42 AM
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If I were to do a 2" crossover I'd ideally like to find a nice smooth reducer to not disrupt airflow.
Correct, I've been doing some search on headgaskets. I have a box of ARP Studs. The fuel system is fed with a Walboro 225gph pump with an intank sump. The Feed line is -6 an which might be a tad on the small side...
Does anyone have comments on how this turbo should work on the 5.3? I'm hoping to build boost early with a relatively low psi and hold it through the RPM range.
Is my A/R too small or should that be just about right for the direction of the car?
Does anyone have comments on how this turbo should work on the 5.3? I'm hoping to build boost early with a relatively low psi and hold it through the RPM range.
Is my A/R too small or should that be just about right for the direction of the car?
02-25-2011, 12:37 PM
#7
If I were to do a 2" crossover I'd ideally like to find a nice smooth reducer to not disrupt airflow.
Does anyone have comments on how this turbo should work on the 5.3? I'm hoping to build boost early with a relatively low psi and hold it through the RPM range.
Is my A/R too small or should that be just about right for the direction of the car?
Does anyone have comments on how this turbo should work on the 5.3? I'm hoping to build boost early with a relatively low psi and hold it through the RPM range.
Is my A/R too small or should that be just about right for the direction of the car?
I wouldnt drop the compression so much, maybe leave the 5.3 heads on it if all you are going for is 400-450whp. It would spool a lot faster and you dont need low compression with what little boost you;re going to run.
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02-25-2011, 12:45 PM
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Any specific reason you aren't going with an alum ls1 longblock? The M3 deserves better than an old iron 5.3 imho. I hear ya on the header situation but you could build an ls1 to make that power easily. Would be much less of a headache to work on if you'll be beating it up on the autox track requently...would cost much less as well...
02-25-2011, 12:49 PM
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Because it's free and I will blow it up. There's a nice little cost difference involved in that.
The weight difference isn't much either, and the power will make up for it anyways.
The original BMW power train actually was a bit heavier.
Aluminum block would be nice, but surely not needed. Unless you want to buy one for me.
The weight difference isn't much either, and the power will make up for it anyways.
The original BMW power train actually was a bit heavier.
Aluminum block would be nice, but surely not needed. Unless you want to buy one for me.
02-25-2011, 01:34 PM
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Bayerische Motoren Werke AG (BMW), (literally English: Bavarian Motor Works) is a German automobile, motorcycle and engine manufacturing company founded in 1916
02-25-2011, 01:49 PM
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Yes, Sheet metal ducting, Thick aluminum radiator, nice large oil cooler, and intercooler are apart of the plan. As well as coating of all the hot parts.
The goal is to sort it out to be dead nuts reliable.
The goal is to sort it out to be dead nuts reliable.
