Hi, i'm new to posting, but a long time reader, so heres my question. I am in the process of a medium-hi boost H22 build-up. I plan on making my own dry sump system with a custom oil pan and pump bracket, I plan to use a Peterson pump with 2 scavenge pump sections. I know that a dry sump creates vacume in the crank case. My main question is if 2 scavenge pumps are enough to still keep vacume in the crank case under hi-boost situations around 30-40psi max, also would the vacume cause any problems with the oil feed to the turbo seeing how the vacume will be pulling oil out of the drain line. One more thing , I know with the dry sump i proballly wont need a huge oil catch catch can with like 3 breathers, but do i still need a small vent on the valve cover to let air in, or do i just seal the cover?
Thanks!

 

Who makes dry sump systems for H22s?

 

I know z10 used to make one for the F series, and peterson fluid systems did make one for the h22, I plan to fabricate my own and just use their pump and reservoir. Someone on here must have an idea of what I am talking about.

 

have you got any pics or details of the Z10 or Peterson setups

 

There was someone on cardomain with a 95 prelude with the peterson setup(had a special alternator relocation bracket) the z10 im not too sure about, i think bisi might be using it. The actual instillation of the system i am not too worried about, i'm just wondering about the whole high boost and keeping a constant vacum in the block. someone on here must know a thing or two about dry sumps.

 

i know ARE sells them for the s2000, differences between the blocks arnt far off, using their parts with some fab it probably wouldnt be hard.

curious... why go from a wet sump to a dry? better cooling sure...

in an h22 you dont have to worry about oil slosh, theres a slosh plate over the crank and the amount of oil pressure the h22s stock oil pump produces is rather high, not to mention the placement of the pump in the pan.

i dont see the purpose of doing this, the cost and complexity out weigh the pros id think.

unless you plan on putting wings on your car and flying upside down that is (most planes have a dry sump.. thats the only reason i even know what one is)

 

http://www.starvacuumpumps.com/catalog.php

i suggest you go with one big pump... or a smaller pump with a break valve

 

The main reason why I want a dry sump is because i don't want to have 4 -10an lines running from my valve cover to a breather tank. This is the setup T1 recommends on high boosted motors, and id rather go for the clean look. Another reason is that if i use the moroso pan i have now i cant use the factory prelude tranny brace/clutch cover (which actually bolts to the stock cast aluminum pan), By fabricating my own dry sump pan i can make provisions for the clutch cover/brace to bolt to it. I plan to machine the pan from a solid billet slug of aluminum. I know dry sumps are expensive but i want something unique and reliable, I heard stories of aftermarket prodrive/circuit works oil pumps shattering under high loads.

 

it was Oaks Racing.


in my experiance, from using a wet sump system with one pressure section, and one scavenge section. the scavenge section is a complete waste. we have had better results using 2, one inch hoses off the valve cover.