Hello,
I will be building a new buggy next winter(4 seater so grandkids can ride too) I am currently in the planning stages and looking for advice and knowledge.
The parts I currently have are:
Aluminum super case
Cima 94mm b p/c (a nos set from the 80's)
84mm Empi crank
5.5 Empi rods
AA 501 heads (42x37 valves)
Engle FK43 cam
I would like to make good torque and plan on 5800 rpm redline.
This will be used in the woods running trails and climbing hills in KY, WV and Ohio.
I am planning to limit boost to 10lbs, this motor will be EFI(microsquirt) and intercooled, would like to run at least 9to1 static compression and can run E85 if needed.
I am not opposed to different heads and cam.
Was considering a T3/T4 hybrid turbo.
Thanks
Kenric
2332 turbo build suggestions
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woodsbuggy1
- Posts: 823
- Joined: Sun Feb 20, 2011 5:15 pm
2332 turbo build suggestions
Good quality is getting harder and harder to find.
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Chip Birks
- Posts: 4042
- Joined: Wed Mar 12, 2008 5:59 pm
Re: 2332 turbo build suggestions
Sounds like a lot of fun to me!
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woodsbuggy1
- Posts: 823
- Joined: Sun Feb 20, 2011 5:15 pm
Re: 2332 turbo build suggestions
Any suggestions on what trim T3/T4? I am thinking about 57 trim but interested in hearing what has worked for others?
Kenric
Kenric
Good quality is getting harder and harder to find.
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risk
- Posts: 335
- Joined: Mon Nov 19, 2007 2:43 pm
Re: 2332 turbo build suggestions
I like to err on the large side so you land somewhere near the center of the turbo's max efficiency island. Outside that max efficiency, you just blow hotter and hotter air even though boost goes up. I noticed this with some of the smaller turbos I have ran, even though they spooled faster. Power seems to fall off on the upper end. I really liked my 62mm T3/T4 on my 2276 as far as upper end power levels and super flat torque.
So lets say your motor, conservatively NA, makes 165hp.
165hp + 10psi of boost on average will get you to say 275hp according to calculator below.
http://wallaceracing.com/hp-blower.php
Then take 275/165= 1.68 for your approx pressure ratio.
Then look at the map for 57 trim T04, go to 1.68 on Y axis, then your HP (which is roughly equal to flow) on X axis.
This gets you close to max efficiency, which is of course theoretical.. but in my experience really close to reality of how the turbo will perform at a given boost level and power level. Pair that with a stage3 turbine wheel and .63 exhaust housing and I think it would be plenty for that lightweight buggy.
Yes, the above turbo will make 400+ hp but it will be super hot air and not very efficient. So when shopping for a turbo or compressor wheel, the max HP does not mean much to me. I want to see where it is most efficient and therefore less hot air, then choose for that range if that makes sense.
So lets say your motor, conservatively NA, makes 165hp.
165hp + 10psi of boost on average will get you to say 275hp according to calculator below.
http://wallaceracing.com/hp-blower.php
Then take 275/165= 1.68 for your approx pressure ratio.
Then look at the map for 57 trim T04, go to 1.68 on Y axis, then your HP (which is roughly equal to flow) on X axis.
This gets you close to max efficiency, which is of course theoretical.. but in my experience really close to reality of how the turbo will perform at a given boost level and power level. Pair that with a stage3 turbine wheel and .63 exhaust housing and I think it would be plenty for that lightweight buggy.
Yes, the above turbo will make 400+ hp but it will be super hot air and not very efficient. So when shopping for a turbo or compressor wheel, the max HP does not mean much to me. I want to see where it is most efficient and therefore less hot air, then choose for that range if that makes sense.