Originally Posted by BLUE TII

I finally got that WG set-up to work for me without boost creep by porting the manifold and turbo exhaust housing very large up to the WG runners.


https://www.rx7club.com/attachment.p...hmentid=144427

https://www.rx7club.com/attachment.p...hmentid=144429

https://www.rx7club.com/attachment.p...hmentid=144428


Fixed boost creep, but hurt boost response a bit since the stock velocity stacks in the manifold are ported to almost none. I still hits max boost at same rpms (15psi 3,300rpm in 5th), but boost below 3,000rpm boost is lower/slower than it was.

My next stock hybrid will circumvent this problem by putting the WG runners in the manifold right before the velocity stacks and angled so flow wants to exit the WG.

I think that if I put the WG runners in the right spot the turbulence at the far edge of the WG runners will just act as part of the velcocity stack and so not be detrimental to flow.

I am thinking two little Tial WGs to keep it divided instead of one large one with a divider. That WG divider pictured broke again even though it was 1/8" thick SS with a floating design for expansion.

I am thinking of using the BB T04B (T04S) center section and HiFi housing as well.

Anyways, the turbo/WG is working great now. Most of the time Auto-X ing I am having to short shift it keeping it out of the powerband to keep the RA-1s from spinning- but having the power to burn out there on the streets sure is nice. :P

Originally Posted by rotarypower101

I have all these pics I have to put them somewhere right :)


https://njsr.org/pics/albums/userpic...11_(Small).JPG

https://njsr.org/pics/albums/userpic...09_(Small).JPG

Originally Posted by ErnieT (Post 6826661)

VERY nicely laid out. Damn clean.

Originally Posted by signofinfinity (Post 6779065)

I like the boost solenoid instead of the EGR.... neat..... will set up mine there :) :icon_tup:

Any heat issues? :balls:


Sorry for hijacking this.... but its worth an ask ! :fart:

Originally Posted by atihun (Post 6704933)

Here's some pics using earls fittngs with ss braided lines. I also used a heat shield tubing as the lines a few inches from the exhaust manifold:

http://www.atihun.com/pictures/Rebuild/1-30-2006/65.jpg

http://www.atihun.com/pictures/Rebuild/1-30-2006/66.jpg

http://www.atihun.com/pictures/Rebuild/1-30-2006/67.jpg

http://www.atihun.com/pictures/Rebuild/1-30-2006/68.jpg

I think it's good insurance.

Originally Posted by rotarypower101 (Post 6705919)

Atihun, again nice job!

Here is mine…not the prettiest pic but….

https://njsr.org/pics/albums/userpic...0_(Medium).JPG

Originally Posted by BLUE TII (Post 6725586)

I used SS lines on my HKS GT 60mm wastegate. Make sure you use swivel fittings so the hose can rotate even when tightened or it can loosen up easily from the weight of the hose/vibration.

I later added a Hallman Pro manual boost controller and fit it up for -AN lines as well. That was a bit of a pain as the lower nipple is also the valve seat for the ball and the side nipple has the bleed hole.- worked out very well in the end.

https://www.rx7club.com/attachment.p...chmentid=69334

Originally Posted by 1Revvin7 (Post 6756294)

Kevlar braided hose, heat shielding and proper routing has always worked fine for me. Never had a failure.

Originally Posted by BLUE TII (Post 8023088)

1/8" NPT pipe thread is the most common thread size to drill and tap for the WG nipple.

Then you just have to decide the -AN size hose you want to use.

Originally Posted by arghx (Post 8023508)

if you are running an external wastegate with an EBC you should be getting the pressure source from right near the throttle plates (after the IC)

Originally Posted by Aaron Cake (Post 8025584)

Originally Posted by KNONFS (Post 8025642)

Really?

Originally Posted by cozmo kraemer (Post 8026356)

Are the threads on the Tial WG 1/8NPT? So we would use a 1/8npt to -4 adapter, then -4 line?

Originally Posted by tk5dan (Post 6725625)

it is a very good idea to do this for high boost applications. on my car awhile back i had regular rubber hose with a zip tie. one night on 100 octane i was really pushing the car hard (tuned for 27psi) and the line to the wastegate blew off. ended up at 38psi for a few seconds.

stainless lines w/ nice fittings ftw!

Originally Posted by cozmo kraemer (Post 8026356)

Are the threads on the Tial WG 1/8NPT? So we would use a 1/8npt to -4 adapter, then -4 line?

Originally Posted by classicauto (Post 8026430)

My Tial 44mm appears to have M10 x1.0 banjo bolts...

Originally Posted by arghx (Post 8026388)

It tends to spike less. I could be wrong, but I suspect it's because, after the pressure drop of the IC, you get less of a pressure signal to the top of the wastegate. Thus it's easier to tune the gain/duty cycle on the wastegate solenoid, which is hooked into the top port on a typical EBC setup. The more pressure the top of the wastegate receives, the more force is pushing down on it to keep it closed. It is the opposite on the lower port (it's like an internal WG) -- the more pressure it receives, the more it opens the wastegate to vent exhaust.

Originally Posted by cozmo kraemer (Post 8038173)

Funny it happened this way, but the vacuum line came off the wastegate on my way home from the parts store today... 2nd gear I was full throttle from 3000-6000 rpm, I was watching the AFR gauge (around 10:1) and I saw out of the corner of my eye, the boost gauge warning light come on...too late... Lost the engine.

Open my hood to find the wastegate line dangling... I had just ordered the majority of the fittings from Summit.

Now going LS2. My rotary related parts will be parted out.