I would say that someone independent should dyno an LS1 engine, say a 422, with it's higher compression and larger chambers, like one of the sponsors, chosen by poll on this board. Then several tuner programs should be chosen and run with both pumps such as the JPR reverse flow and the best standard flow pump and the board members can see for themselves what gains can be had. We could log Autotap and also record knock retard. ALL tests would be done with HOT engine and the same cool down routine and starting engine temp as verified by an infrared heat gun. We would also log AF ratio and anything else to make sure the programs and tests were legit.

I think on some engines reverse cooling does more than on others but it CAN be worth a little bit so everyone should give this a chance if they are willing to do some legit testing that is guaranteed not to be biased. The results may surprise some people and then again they may not. I have heard several reasons as to why reverse cooling was dumped from the LSx engines and none were becasue of any patents. There is no patent of reverse cooling that I know of and more than a few engines have used it. The main problems are air getting trapped and causing hard to diagnose hot spots when certain individuals work on reverse cooled engines. Sometimes even higher water pressure with more pressure cap can reduce detonation as well for instance but reverse cooling is probably the best if your current system isn't working.

Also the amps drawn by both pumps must be considered as parasitis loss. I'd also suggest running some programs that are considered undoable with standard cooling but optimized for the JPR setup as far as timing or AF for instance to showcase the JPR stuff. We could then see how the same tune ran with the standard cooling type Mezziere pump and see if the power dropped or we got more detonation etc.

 

i would just go for a same-day test at one sponsor with LS1-Edit (like MTI or ARE for example). One car is a stock internal bolt on car, one heads/cam car with 10.8-11.2:1 compression, and one big-dog 422 with higher compression. Say three programs for testing (two for the SI car). One stock-style program and two identical custom programs with different timing curves just for arguments' sake. Atap the cars CONSTANTLY. Post logs with graphs and then everyone can put their money where thier mouths are. Seems simple to me. Maybe SAM could organize it as a teaching exercise. They're reputable and I'm sure they have the means to get 3 cars there.


Ryan

 

I'd really like to see this, but...

I'll probably just end up putting a Meziere pump on my car.

 

who's gonna pay for all that **** anyway? That's a LOT of dead presidents to smack down.