gutted-dx

iTrader: (1)

Hell yeah good to see your still working on it!

siregcivic

i am interested to see what the gsr manifold can do because i am doing an lsvtec with a gsr head and ive been debating to use the gsr manifold and modify it or use an edelbrock victorx

00Red_SiR

Do not use the Victor X on anything other than a turbo.

siregcivic

hmm okay... we are using a victor x on my friends b20vtec with gsr head and skunk2 stage 2 cams and cam gears it feels like it wants to pull up top like crazy but it honestly makes really good tq and good top end no dyno sheets yet, but it made more power over the gsr manifold for sure just by *** dyno i could totally feel the difference

88Hatchy

The Victor X works on 2.0L engines well.

00Red_SiR

Dyno that Victor X against any other intakes you want and you'll see what I mean......even on most 2L.

OH_1fstgsr

iTrader: (2)

Something with a 85mm or 86mm bore and a 95mm or larger stroke at 13:1 or higher compression would work well with a Victor.
Most 84x89 2.0ltr do not move enough air to take advantage of a Victor. The Perfomer X Kingmotorsports modified is probably the best for 2.0ltr engines at this time.

Uncle Dave

Victor-X on 99% of 2lt or smaller engine make them fell very sluggish under 7k rpm even if the dyno says differently. I find most 2lt combo's very sensitive to inlet manifold tuning, on a DD engine I find a well ported P30 manifold gives you the best feel.When I was running a 13to1 comp B18 I used both the GSR manifold modified and a S2 Pro series and the GSR gave the best power average but the S2 was much nicer to drive everyday.

DDTECH

I happen to like my victorX, i dont feel any "sluggish" under vtec. The low / midrange in the car seems fine to me... but you need a serious motor to accommodate this manifold..

I would think a modded performerX or something along those lines would be better.

Red Balut

Uncle Dave, What was done to the GSR intake manifold?

OH_1fstgsr

iTrader: (2)

The manifold is schedule for delivery today. FINALLY!!

Some measurement I plan to take.
Stock GSR Plenum volume.
New Modified GSR Plenum volume. (Is has been increased, but not sure how much)
Performer X Plenum volume.
As well as the runner lengths in all of these.

1.5Slowmatic

awesome! in for pics

Uncle Dave

Mainly porting and blending of the runners and plenum,the butterflies where removed I have not given up on this project when I put a B20 with a P72 head back in my car I will play around with it again.

OH_1fstgsr

iTrader: (2)

NEW PLENUM SECTION, MUCH LARGER NOW, ROOM TO BREATH


OLD PLENUM


BUTTERFLY PLATE WITH NEW RUNNER ENTRANCE, EXPOXY


OLD BUTTERFLY


NEW BUTTERFLY RESHAPED AND SMOOTHED RUNNER TRANSITION


OLD MANIFOLD, TRANSITION FROM PLENUM TO BUTTERFLY SECTION YOU CAN SEE INTERFERENCE



THE PORTION REMOVED


I didn't take any pictures of the runner section because nothing really changed. Just smoothed and partially polished.

OH_1fstgsr

iTrader: (2)

I will be measuring the Plenum sections to find out how much larger volume the new one has.

igorka_91

iTrader: (1)

What would happen if you would remove all the material from the middle of the GSR intake manifold and add a 70MM throttle body? ? And OH_1fstgsr can you post up more detailed pics. Or just more pics.
Thanks

Remove all of this.

OH_1fstgsr

iTrader: (2)

You would have more Plenum volume which is good but you will have air trying to flow into a butterfly plate that looks like this.

This would be very bad for air flow. You would be creating a ton of air turbulance.

As for more pictures and can no longer take the butterfly section off the plenum. They are epoxy’d together. What kind of pictures?

krazy one

OH_1fstgsr, That looks great! Who did you send it to?

igorka_91

iTrader: (1)

I think i explained my self wrong. Remove the webbing inside the gsr mani. Look t my pics and the stuff inside the box is what i want to remove? gut the mani lol.
Its aight.

OH_1fstgsr

iTrader: (2)

There are a number of issues.
1st, you will lose all the benefits of a dual runner, the low end torque.
2nd, the plenum volume would be huge, my guess nearly Victor X size.
3rd, from other manifolds that I have seen this done the runners are way oversized and slow down the air. Also the entrance to the runners is very poor.
From the research and studying I have done about manifolds, I would personally recommend against this. You basically are creating a Single runner manifold, and very poor one at that.

**EDIT**
After some thought on this request it might be possible, if you have some time and money.
Cut out the plenum section. Do not try to cut up the butterfly section. Get a shop to make an aluminum spacer, 1/2" or 3/4".
Now the challenging part, you then would be able to cut out the runner section. Most of what you cut out will need to be replaced with new velocity stacks and aluminum material to shape a taper to the exit of the runner section. Something like that picture below. NOT cheap or easy. It could be four separate pieces or one large piece that includes all four runners.

igorka_91

iTrader: (1)

That makes sense. I know **** to none about intake manis and i have a spare one to experiment with. I will end up doing what you did. I was also thinking of using two butterfly spacers. One with butterflies and one with out them Just gut the inside webbing. Like top of the manifold, gutted spacer, butterflies spacer, lower manifold. That would give a tad bigger plenum volume? Also what do you think about a 70mm TB with what i said?
Thanks

tempsohc

Doing the plenum spacer would also actually cause a gap between the dividers creating a disturbence. Stacking spacers that isnt modified would actually increase runner length unless opened up but then there would be a gap. No way to shorten runner length without moving the butterfly assembly closer to the head itself.

Red Balut

When will you be installing it to the motor to test it out?

UncleD

iTrader: (2)

Haha. Maaan...are you really comparing IM's with the butt dyno??

xero_xero

Interesting ideas, finishing of the inside of the intake looks well done.