Single Turbo Installtion Pics
10-22-2006, 03:46 PM
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Single Turbo Installtion Pics Just finished a single GT40 installation on our sandbuggy.
Thanks for all the tech knowlege from this forum - we couldn't have done it without this boards help.
Made 520 HP at the wheels at about 8.5psi of boost.
Dan Dooley
Phil Dooley
Thanks for all the tech knowlege from this forum - we couldn't have done it without this boards help.
Made 520 HP at the wheels at about 8.5psi of boost.
Dan Dooley
Phil Dooley
Last edited by dpd069; 10-23-2006 at 03:21 PM.
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10-23-2006, 07:31 AM
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The tranmission is a Mendeola MD4S2D driven though a double disk Kennedy clutch.4 speed with a 5.14 ring and pinion. Mild steel headers ceramic coated black and with v-band quick disconnect flanges. The motor is a bone stock 98 LS1 (except for new rings and hi-flow oil pump). 4" GN style intercooler with a fan switched to come on with boost. GT40 turbo and a Tial 38mm gate set to 8.7 # of boost. No BOV. Tuned with LS1 edit. Std PCM and modified factory harness. CR aluminum radiator with Spal fans.
The car is a Dunntech chassis, four seat sand car with about 22" of suspension travel front and rear.
The car is a Dunntech chassis, four seat sand car with about 22" of suspension travel front and rear.
Last edited by dpd069; 10-23-2006 at 03:22 PM.
lol 
10-23-2006, 11:52 AM
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GT42 a large turbo? from the sizing we did, I thought we sized it a little small for the LS1 so it would be really good for boost at midrange RPM.
The hot parts were coated by Affordable Powder Coating here in Phoenix. They said black would be rated to a higher temperature, and we thought with all the silver on the car the headers would be lost if they were silver.
Phil and Dan
The hot parts were coated by Affordable Powder Coating here in Phoenix. They said black would be rated to a higher temperature, and we thought with all the silver on the car the headers would be lost if they were silver.
Phil and Dan
10-23-2006, 11:54 AM
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Originally Posted by e015475
GT42 a large turbo? from the sizing we did, I thought we sized it a little small for the LS1 so it would be really good for boost at midrange RPM.
The hot parts were coated by Affordable Powder Coating here in Phoenix. They said black would be rated to a higher temperature, and we thought with all the silver on the car the headers would be lost if they were silver.
Phil and Dan
The hot parts were coated by Affordable Powder Coating here in Phoenix. They said black would be rated to a higher temperature, and we thought with all the silver on the car the headers would be lost if they were silver.
Phil and Dan
Ah what do I know. I can't even figure out what size twins I am going to run.
Either way its definately a cool project!
10-23-2006, 12:51 PM
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No, we are not really trying to make more power out of it. With a stock block and the kind of abuse we put it through in the sand dunes, we figured we would rather be safe than sorry. We figured a max of 10PSI. Its not easy to be towed out of large hills made of fine sand at 2,200lbs.
we chose the GT40 instead of a twin setup because of space restrictions and because it is just a little different (most people do a twin setup). Also we initially had plans of during the off season of the sand car using the turbo for a remote setup on a 5.3L truck, so we got the 40 to work with both. Now, after all the fab and install work we realize it is just not a practical plan so I guess we will have to buy another turbo.
The turbo is a little small for the LS1 but as long as we keep the PSI down, we are able to still be in the efficiency islands throught the entire RPM range. Besides, you can only have so much horsepower/torque before you start digging yourself a grave in the sand. The trans is only capable of handling up to 550hp so we also had to be careful about that (the next upgrade trans is the Albins at 18,000 dollars, a price we really cant afford to pay) so we had to limit our boost to accomodate the trans.
About sizing... it took me 2 or three weeks to size it. Finding out what other people are using isn't easy. They might tell me the general size but as for turbine housing sizing and A/R ratio, etc., you are kind of on your own. A lot of the turbo kit companies won't tell you specifically what they use, i assume to protect their business. We ended up knowing what we wanted but due to the advice of one of the staff at Limit Engineering (in Lake Havasu Arizona, where we bought the turbo) we ended up changing it a little at the last minute.
Fabing the setup is probably the hardest but I think a close second is choosing which turbo(s) to use for your application. It just takes a lot of time, research, and patience.
Dan
we chose the GT40 instead of a twin setup because of space restrictions and because it is just a little different (most people do a twin setup). Also we initially had plans of during the off season of the sand car using the turbo for a remote setup on a 5.3L truck, so we got the 40 to work with both. Now, after all the fab and install work we realize it is just not a practical plan so I guess we will have to buy another turbo.
The turbo is a little small for the LS1 but as long as we keep the PSI down, we are able to still be in the efficiency islands throught the entire RPM range. Besides, you can only have so much horsepower/torque before you start digging yourself a grave in the sand. The trans is only capable of handling up to 550hp so we also had to be careful about that (the next upgrade trans is the Albins at 18,000 dollars, a price we really cant afford to pay) so we had to limit our boost to accomodate the trans.
About sizing... it took me 2 or three weeks to size it. Finding out what other people are using isn't easy. They might tell me the general size but as for turbine housing sizing and A/R ratio, etc., you are kind of on your own. A lot of the turbo kit companies won't tell you specifically what they use, i assume to protect their business. We ended up knowing what we wanted but due to the advice of one of the staff at Limit Engineering (in Lake Havasu Arizona, where we bought the turbo) we ended up changing it a little at the last minute.
Fabing the setup is probably the hardest but I think a close second is choosing which turbo(s) to use for your application. It just takes a lot of time, research, and patience.
Dan
Last edited by dpd069; 10-23-2006 at 03:20 PM.