24vVR6T CQ Project: EATSGTR rear firewall fab.

[my2000apb]

This is going to be a good one. My favorite kind of build........HARD CORE for sure.

Craig Cook

yes sir nothing but hardcore here, no more street vs track compromise!!!

Gonna be a ripper

thanks, fuel rails are perfect, spacing is almost there
sent you a PM re:injectors

nice project me like

thanks, theres going to be some fun cq days @ NED coming up

[audifreakjim]

:bump:

does jimmy wnat an update?:)
ive got some juicy pics

YES! I am slacking on my project, so let's get some pics

[my2000apb]

ok so this has been in the back of the garage for a bit as ive been working on my 7a/o1e 4kq and its being stubborn as shite. so i went back to working on the cq as i needed a break from the 4kq before i go crazy. the cylinder head has been completely torn down and the porting is still going strong.

as discussed a bit earlier, i will eventually be going to a large port, bigger valved 3.2L head. there are some differences between the two heads

the intake to head flange area is lightly angled in the BDF 2.8L head where in the BJS 3.2L head its vertical.
So we have placed the plenum and TB to IM feed in a location so that it can move up just a bit and rotate downwards when I do finally make the head swap.

So the BJS head has larger intake ports, so the IM to head flange is r32 as are the gaskets and phenolic spacer. The BDF ports have been enlarged as well as gasket matched and transitions smoothed.

So the 034 r32 IM flange is finished/matched and smoothed and ready for runner welding, more on that in a bit

Heres the pics!!!

[my2000apb]

and heres more porting,
the head isnt finished by any means
mostly finishing up 034 r32 im/head flange so its ready for runner welding

[my2000apb]

UPDATE: intake manifold work has begun!!!

IM from head to TB
-034 MS r32 headflange, cnc’d for perfect transitions from ross oval tubing to rectangular r32 ports http://www.034motorsport.com/engine-com ... 18162.html
- HS tuning, r32 intake manifold gaskets, cant use oem o-rings, http://www.hstuning.com/home/tt-mkii-20 ... old-gasket
-034 MS r32 phenolic spacer http://www.034motorsport.com/engine-com ... 19672.html
- Ross Machine Racing , oval runner http://www.rossmachineracing.com/ovaltube.html
velocity stacks http://www.rossmachineracing.com/ovalstack.html
and plenum flange http://www.rossmachineracing.com/univer ... plate.html
- Sharpe Products, plenum material, 6” diameter 6061 0.1875” wall and 6” dia. Hemispheres.

That’s as much as you get to know for now, the feed from TB to plenum is just about dialed, ill get some pics snapped of how that will lay out. There will be very even cylinder distribution 

So we’ve got the head flange finished from porting/polishing and is ready for runner welding. The oval runners have been cut to length, now just to make them dead flat with the Bridgeport. The plenum and hemisphere/plenum caps have also been cut. On to the PICS!!!!

[my2000apb]

a lil more intake manifold update, Ryan @ Higbee Fab. has machined out the circles in the plenum flange for the velocity stacks, and they are tacked in place. they will be fully welded inside and outside of plenum, and will be decked flat on the inside before the plenum is welded on.

[audifreakjim]

That is more like it Looks great!

[Highlander]

Damn,

this is going to be cool........totally motivates me to take my car to the next level.

Brilliant.

Cheers,

Craig

[ChrisAudi80]

Good work Tim. Why are the stack even? Are the runners not unequal length?

[Lord_Verminaard]

Unlike the early 12v VR's, which had unequal lengths in the manifold to make up for the head runners being different, the 24v's have same-length runners in the intake and the difference is made up in cam phasing- IE. the rear cam has a slightly different profile than the front.

Brendan

[my2000apb]

Good work Tim. Why are the stack even? Are the runners not unequal length?

cam compensation in the 24v's

Unlike the early 12v VR's, which had unequal lengths in the manifold to make up for the head runners being different, the 24v's have same-length runners in the intake and the difference is made up in cam phasing- IE. the rear cam has a slightly different profile than the front.

Brendan

also if you look at some of the pics, you can see where the plenum and flange meet, theres about ~1/2" before we'd run into the coolant res area
because the VR motor is upright vs a 7a where its leaned to the pass side, theres less IM room, so a lot is packaging, and the cam compensation is there, and its not the main reason, but theres been plenti of power made with this style IM

[ChrisAudi80]

Good work Tim. Why are the stack even? Are the runners not unequal length?

cam compensation in the 24v's

Unlike the early 12v VR's, which had unequal lengths in the manifold to make up for the head runners being different, the 24v's have same-length runners in the intake and the difference is made up in cam phasing- IE. the rear cam has a slightly different profile than the front.

Brendan

also if you look at some of the pics, you can see where the plenum and flange meet, theres about ~1/2" before we'd run into the coolant res area
because the VR motor is upright vs a 7a where its leaned to the pass side, theres less IM room, so a lot is packaging, and the cam compensation is there, and its not the main reason, but theres been plenti of power made with this style IM

Aha, I see. I guess going turbo, the motor would not be as sensitive to the unequal length runners.
Really looking forward to see your IM. I dig sexy IMs

[vr-vagman]

[quote="ChrisAudi80 ... Aha, I see. I guess going turbo, the motor would not be as sensitive to the unequal length runners.
Really looking forward to see your IM. I dig sexy IMs [/quote]

Not quite true Chris. IMHO what is important for N/A motor (in terms of IM) the same is for SC one. The N/A motor is also "boosted" with atmo pressure.

[my2000apb]

[quote="ChrisAudi80 ... Aha, I see. I guess going turbo, the motor would not be as sensitive to the unequal length runners.
Really looking forward to see your IM. I dig sexy IMs

Not quite true Chris. IMHO what is important for N/A motor (in terms of IM) the same is for SC one. The N/A motor is also "boosted" with atmo pressure.

[/quote]

there isnt a sensitivity issue with the unequal runner lengths, the cam compensation / durations, allow the banks to get equal amounts of AIR, air at combustion chamber opening, which is much more important to have equal than the distance the air is traveling.

its the equal available air supply per cylinder, whether it be runner length, or a form of compensation to vary cylinder bank airflow, the banks ahve the same amount of available air

[vr-vagman]

I thought Chris is talking about AAA engine with equal lenght runners, i.e. so called SRI.

[ChrisAudi80]

I thought Chris is talking about AAA engine with equal lenght runners, i.e. so called SRI.

Short Runner Intake? This engine is the 24v, Ivo.

[my2000apb]

I thought Chris is talking about AAA engine with equal lenght runners, i.e. so called SRI.

Short Runner Intake? This engine is the 24v, Ivo.

24v yes

runners are still unequal, cams compensate


no major updates on this one, mostly me jsut tryign to figure out how to plumb all the coolant and oil, as the motor being mounted sideways makes it a bit harder.

one of my summer jobs fell through, so im raising some funds to pay a debt before i continue getting any more parts on this thing.

buy some parts
viewtopic.php?f=4&t=41551

[my2000apb]

ok, mini update

ill be dropping off my cylinder head @ ryans to get part of my IM welded up, from the head flange to plenum flange then we can put it back in car for a few

also i need to get my 034 24v vr6 exhaust flange machined, it wont even fit over the exhaust studs :curses: :frustrated:
so ill be getting the number 2 and 4 cylinder holes enlarged just a tad so the studs fit through them, and then enlarging the other cylinder mounting holes so that the manifold can expand. the flange is currently a single piece, i will be cutting it between 3 and 4 cylinder holes, so each piece is centered on its middle of three cylinders and allowed to expand under heat

i cashed in a few amazon credit card points and have 16an turbo drain weldon coming, a few small npt adapters and what i believe is the correct metric adapter for the holset oil drain

[R90Q]

super

[bdcoombs]

awesome work.. thanks for sharing..

[audidub]

hmm i know i finally worked on your intake where's the update?

[my2000apb]

Well dang this is my 8000th post, damn

Ok well seems like a good time for an update

Ryan @ Higbee Fab. and myself finally got some time to get some more intake manifold work done. Since the last update ryan has finish welded the velocity stacks to the plenum plate above and below. We were initially going to just weld the back side of the velocity stacks, but as he has a mill, he welded the inner plenum side of the plate/stacks as well. Once that was all done, he had it pressed to dead flat and then we went and machined it flat and clean for the inside of the plenum. There are a few small pits but they will be filled and cleaned when we get back into it for plenum and TB feed welding.

We are using full hemispheres to enclose the plenum ends rather than rounded end caps, the ports on the VR are pretty close to each other. Soo close that if you look at the last update’s pics you can see the velocity stacks come about 1mm from interfering with each other. I wanted the #1 and #6 cylinders to have air equal to that of the other cylinders, so the larger hemispheres give the end cylinders the same volume to draw from as the others. Ryan milled the plenum plate nice and round in prep for hemisphere welding.

I got the head and IM lower back and its now in the car and has the endcaps and plenum clamped on, so we can continue work in the engine bay while knowing exactly what area is taken up by the IM.

the plenum has been cut and prepped for welding, fitment is almost perfect, we wont be welding it until it is perfect. endcaps are almost done as well, but we will be fitting the TB to plenum feed before anything above the plenum base is welded

On to the pics!!

[death 4kqt]

sex

[my2000apb]

death 4kqt wrote:[/quote]sex[/quote]
yea i agree

and ill give ya a sneak peak on next update

[death 4kqt]

header porn is the best