....
Sum...I'm pretty sure Stainless knows these turbos are way to big for his little motor and was joking...
Yea, I knew that
, but his 750 did get me curious about a turbo that might work for it so I started looking and came up with the one above. I'm sure there are a number of other ones also.
.... You guys are intercooling [I hope] which will drop the air temp a bunch and increase the density ratio.
Depending on what pressure and temp the turbos were tested at the pressure is a couple of lbs less than sea level and the days can be hotter increasing the outlet temp. If there was a 2 lb drop and to get 22lbs gage the turbo would be making 24lbs.
JL222
Yep we are intercooling....
... didn't put a lot of ice in the...
.... 28 gallon tank on the lic. runs last year but it still brought the temps from 250 down to 100 and I'm thinking it will be a lot better when we really load it up with ice this next year.
The MatchBot calculator is nice in that....
.... it gives the projected air temps at the compressor outlet and manifold and also figures in for altitude and temps and gives the pressure ratio at the compressors and the manifold. You have to put in other things like intercooler efficiency and such and account for plumbing pressure drops yourself. It isn't perfect and is only as good as your input data, but still a very good tool. I see no reason it wouldn't work for belt driven centrifugal compressors as long as you had the compressor map for them. The air might be slightly cooler since there would be no turbine to give heat to the compressor through the center section.
The data above was the outputs for the 750 cc engine at 4500 ft. and 80 deg. The turbine info is not right as you need to use the program with one of their Borg Warner turbos and I was using it to figure the map points for a Turbonetics turbo. If you are looking at one of their turbos it will plot exhaust pressures and more as you can see above.
I think...
... our layout is really good as we had 8 lb. springs in the wastegates and on the springs we were running just a little over 9 psig at the manifold so I think we have minimal pressure losses in the plumbing. Only 2 90 deg. turns in the path from the compressors to the carb hat. 90 deg in the intercoolers on the inlet side and 90 on the other side coming out. We went pretty far overboard on the 2 intercoolers. They claimed the intercoolers are suppose to support 1500 HP each (\ Probably optimistic)...
http://www.cxracing.com/mm5/merchant.mvc?Screen=PROD&Store_Code=CXR&Product_Code=AWIC03&Category_Code=.... and we went with 2.
Sum