Nathaninwa

Thankyou. I really enjoy welding alum!

Have the piping done, tranny cooler hung. Just need to replumb the tranny lines I ended up lifting the intercooler 3/4 inch tonbetter full in the grille area, so need to finish that proper and wait for my couplers to get here

Nathaninwa

Have this all ready to go. Just need the hot side couplers and can test this out

Nathaninwa

Well intercooler did not fix the issue. Air temps are in check though! At 19psi creep with a 10lb spring there is 23.5lbs pre intercooler Creep is slower, it still present though

So I fitted up the standard cover last night and will go test again today

rotary1307cc

iTrader: (5)

The dump tubes on the wg kill the capacity

Had dual 38 mvs tials. Controlled boost fine, added a short 3" dump to one gate to get it away from the IC tube.

Boost would runaway with it on

Nathaninwa

That was one test I forgot to do yesterday. I meant to pull the gate tubes off. I'll see what tonight holds for time

I'm right back to last years combo now, standard cover and intercooled. Now the only change is tranny and converter

Nathaninwa

Results are in.

Standard cover, 10lb spring nets me 10.5 psi in high gear
Standard cover with 20%dc gets me 14psi
Standard cover with 50%dc get me 18psi

Race cover back on, with 10lb spring, yesterday netted me 18.5 and platouing, tonight with the screamer pipes gone, it flatlined 12.5 psi. Didn't check any dc% as weather was coming in

So this tells me my 1-3/4 Y'd into a single 2-1/4 is causing me issues. I think I have time to remake the 2-1/4 into 3 inch for Saturday's event

This also tells me that my ETS core is less restrictive than the frozen boost 4x9x10 core and that the race cover is a lot more efficient. I can feel the power difference and it sounds stronger from the inside, but the folks watching from the outside said the car is overall quicker and sounds stronger with the race cover

So I can redo a 3 inch pipe, or go back to the standard cover this weekend

Nitroused383

iTrader: (10)

Thanks for the updates I'm surprised to see the race cover made such a difference.

Nathaninwa

I was to. I did a bunch of research on the cover before the purchase and all of them stated that the cover was not worth anything till you have maxed out standard cover, or at least close to being all in. I took the gamble, more for the looks than anything and am quite surprised at the data

Looks like my race event is cancelled this weekend, so I'll take the time to run new piping off the gates, maybe upsize to 2 inch then blend into a single 3 inch

I'm also happy to report that the race cover, tubes off setup was running closed loop with 0% dc. Meaning it ran 100%dc to 175kpa then still had the chance to meet the new Wastegate pressure with out overboosting like it was doing before

Forcefed86

iTrader: (4)

Great info, thanks for sharing!

Might try keeping the dumps separate. I'd think you'd have less interfering pulses that way.

RonSSNova

iTrader: (3)

I merge my two 1.75" dumps into a single 2.25" that dumps by my main down pipe behind the front tire and had no boost creep issues when I was running 10 psi.

It's odd how something works on one setup but not on another.

rotary1307cc

iTrader: (5)

Glad to see that worked for you.

People never think of it but it definitely kills gate flow potential

rotary1307cc

iTrader: (5)

Put a 96/1.32 on and then say if it works

RonSSNova

iTrader: (3)

Yeah, I'll get right on that.

rotary1307cc

iTrader: (5)

Just making the point that it's apples to oranges to compare

stevieturbo

Because they're usually completely different

Nathaninwa

Different combos for sure. Just look at my boost dc being differnt from cooler to the next and how my 1-3/4 into 2-1/4 doesn't work on the race cover. Shows the potential even down at lower boosts what the race cover offers

I've decided for a weather standpoint to not attend the Bremerton car event this weekend. I'll head up in august when they run it again. So now I have until June 3rd before Lynne t points race in Toutle. So I'm getting my hands on a pair of Precision 46mm gates and I'll mod them on there with better gate flow and twin pipes out the car

Thankyou for all the help and suggestions on this matter, feels nice to have a solid conclusion

rotary1307cc

iTrader: (5)

So what's the raceweight on this thing now? I thought it was like 2800 last year and you said you dropped 300 more. Are those cars that light or how that light?

Nathaninwa

I've got conflicting info. My buddy bought a used set of car scales. I weighed the new setup and race weight was at 2326. Which felt a little light but I did take a bunch of weight out. Monday on the way home we pulled off at the truck scales to get a new intercooler weight and scale said 2520 race weight. I had used the same scales back then for the 2750ish weight. I know close to 300 came out, so I'm in the sub 2500 zone at least

rotary1307cc

iTrader: (5)

That's crazy, are they just that light or is this a chassis car?

Makes my rx7 look like a damn tank

stevieturbo

What are the differences with the race cover vs the normal cover ?