Blacktrax Intake Manifold Spacer

[BB6-SH]

I was thinking the spacer would go on to of the butterflys also, to increase plenum volume. If the purpose of putting it on the bottom is to increase runner length then why not just install the h23 runners during the manifold swap? H23 runners are 1/2" longer.

I placed it this way on my f22a6 because of some searching i did on HT. Someone got the best result by placing it on the bottom.

[19dabeast85]

I was thinking the spacer would go on to of the butterflys also, to increase plenum volume. If the purpose of putting it on the bottom is to increase runner length then why not just install the h23 runners during the manifold swap? H23 runners are 1/2" longer.

I'm pretty certain it's the a6 runners that are longer than the H23, not the other way around. This is why most prefer the a6runner/H23plenum setup instead of H23/H23......or am I off?

[Jon]

I'm pretty certain it's the a6 runners that are longer than the H23, not the other way around. This is why most prefer the a6runner/H23plenum setup instead of H23/H23......or am I off?

The A6 runners are shorter then the H23s by about a 1/2" (I have both laying around).

Shorter runners = More power in the upper RPMs
Long runners = More power in the lower RPMs

That's if I remember correctly...

[totaldoughnut]

The A6 runners are shorter then the H23s by about a 1/2" (I have both laying around).

Shorter runners = More power in the upper RPMs
Long runners = More power in the lower RPMs

That's if I remember correctly...

Like I said before if longer runners make more power in the lower rpms which I think is where we want our powerband in the f22a's then why not run the h series runners. Im only saying this because im curious how they would run with h series runners for additional length and double stack above the iab plate to increase plenum volume. Im thinking max bore h series tb and plenum match with above setup, everything is bigger and matched to bisis stage 2 cam may be really nice.

[10thcb7]

you make a damn valid point total.

[ikayto]

Like I said before if longer runners make more power in the lower rpms which I think is where we want our powerband in the f22a's then why not run the h series runners. Im only saying this because im curious how they would run with h series runners for additional length and double stack above the iab plate to increase plenum volume. Im thinking max bore h series tb and plenum match with above setup, everything is bigger and matched to bisis stage 2 cam may be really nice.

h-series runners do not fit on a F22 head.

[10thcb7]

oh and also i think the f22a6 is wider any how

[19dabeast85]

h-series runners do not fit on a F22 head.

You're right, H22 runners will not bolt up. We're talking about H23 runners though which bolt up perfectly, I'm running them!

[SE_DynamiK]

im doing a full h23a1 swap. would it be better for me to put the blaktrax ims on top of my oem spacer w/ butterflies or should i put the blaktrax ims on the bottom?

[KeeleDesign]

im doing a full h23a1 swap. would it be better for me to put the blaktrax ims on top of my oem spacer w/ butterflies or should i put the blaktrax ims on the bottom?

this would be a neat experiement with a dyno...

you wouldn't think it would matter,, but you never know.

[Jon]

im doing a full h23a1 swap. would it be better for me to put the blaktrax ims on top of my oem spacer w/ butterflies or should i put the blaktrax ims on the bottom?

I'd go with the Blacktrax spacer on the bottom.

[cloudasc]

If I have an a6 lower "runners", and an h23 upper "plenum" & throttle body, what would be the differences on a stock f22a1 to a6 conversion; between putting the spacer above the itbs, and increasing the plenum, or putting the spacer below the itbs and increasing runner length? I'd prefer to retain low end power (hence keeping the itbs), but I would also like to move the peak torque and hp points more closer to 5500-6000 range.

[bcjammerx]

blacktrax spacer is like...$75...go get one from the jy and remove the butterflies...under 40

[ikayto]

not even 40, $15 bucks haha

I feel bad for blacktrax, they came up with the idea and we're cheating them by going the gutted oem route.

[bcjammerx]

not even 40, $15 bucks haha

I feel bad for blacktrax, they came up with the idea and we're cheating them by going the gutted oem route.

I wish they would compete a lil' more..if they charged 20-30 I would buy from them...save me the work...but for 75...nah eh...not even for 40