ENG: diy plenum spacer

[d112crzy]

I would say it is most likely the cam powerband. There were no such issues with a stock F22A6 cam, unless you have other issues.

it sounds like the cam timing is retarded a tooth.

[kc8enb07]

anyone know the thread pitch and bolt length needed? just going to get SS bolts vs try and find the AC bolts

[dannycb7]

how much hp will increase????

[Haccord21]

What would happen if you took the butterflies out of both iab plates instead of just one of them?

[kc8enb07]

J30A1 AC compressor bolts work in place of the 90 prelude AC bolts if anyone had problems finding bolts like me. might grind the pointed tip off and add a washer but works as is

[CB7xTURBO]

how many gaskets do i need and what gaskets do i need when doing this..? whats the easiest way to get the bolts? anyone kno where i can find them? thread and all? thanks guys and can a h22 upper plenum fit my a6 runners?

[phantomcb7]

I was wondering if there would be any losses to a double stacked spacer both w/o butterflies on a h22???

[90ACCORDLXGUY]

I would believe you would lose a little power on the bottom end with taking both butterflies out of the spacers. You would also need a tune afterwards as it would be getting too much air during lower RPMs.

[DJ metadelic]

I'd love to do this but don't want to tear things apart if I only have 90% of the parts!

[bcjammerx]

unless you are going FI and then grind this thing completely hallowed out along with the plenum then this isn't going to do you any good and will hurt performance more than help. You won't really be gaining anything in the top end.

You would do better to leave it alone, maybe a slight p&p and use the blacktrax spacer...it is plastic material and dyno'd to gain 5hp throughout the powerband.

[93F22A6]

Guttung the mani like stated aove will work well just only on a non stock app. It will do nothing for a stock. It would be like putting a Victor sr. mani on a 283 sbc with a stock cam. It will not work.

[sulimed]

anyone know the thread pitch and bolt length needed? just going to get SS bolts vs try and find the AC bolts

the two that replace the studs are 8 x 1.25 100mm.

[StinkinLincoln]

DID this mod couple weeks ago worked great...pulls harder

[PR CB7]

unless you are going FI and then grind this thing completely hallowed out along with the plenum then this isn't going to do you any good and will hurt performance more than help. You won't really be gaining anything in the top end.

You would do better to leave it alone, maybe a slight p&p and use the blacktrax spacer...it is plastic material and dyno'd to gain 5hp throughout the powerband.

agreed,

will make the f22 run good, nice sound better pull around 3k-5k

dont do this mod on an h22, like bcj said, it will kill top end

[phantomcb7]

will taking out the butterflies on the h22 do anything??