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Old 10-25-2016, 12:32 PM   #1
roflcopter
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Alright guys, I'm just trying to start a bit of discussion here... Yes I know it's been gone over before but there's always a lot of if's and not a lot of real data behind it...

I have my 245 B230F+T build coming to a completion(at least for it's current form) and finally got it on the dyno this past weekend.



The numbers I got are useless though since the AW70 decided to give up the ghost a few days prior and I couldn't get a 3rd gear pull without it slipping once I got onto boost. The number we saw before it dropped off due to slippage was 189hp(at about 4-5psi) but who knows how realistic that number is...

I have an AW71 on the way but I figured it'd be fun to talk about how much power everybody thinks it'll put down once that goes in.

K-block B230F
9.8:1 NA Pistons
13MM rods
T04E 50 Trim with .68 turbine housing
3" open downpipe
Giant Intercooler
685cc Injectors
Megasquirt

Currently running 21psi.

Thoughts?
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Old 10-25-2016, 12:37 PM   #2
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Is your CR 9.8:1, or do you have modified combustion chambers? Just wondering about that high static CR and 21 psi.
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Old 10-25-2016, 12:40 PM   #3
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My compression ratio is 9.8:1. Since this is K-block without squirters, etc I am not super worried about blowing this motor up... I figured I'd see how far it can be pushed.

At 21psi I do not seem to be having any issues other than with the transmission, I plan on upping it a bit more. Does anyone have any good numbers for dynamic compression calculations on these motors? I hadn't found any but it would be interesting to see what kind of cylinder pressures I should be running.
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Old 10-25-2016, 12:47 PM   #4
thelostartof
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What cam? Stock 530 head?

90+ ported or stock?
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Old 10-25-2016, 12:48 PM   #5
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Originally Posted by thelostartof View Post
What cam? Stock 530 head?
Oops, forgot to list that... Stock NA cam and the stock 530 with a slight bit of port matching.
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Old 10-25-2016, 12:54 PM   #6
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~290-310
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Old 10-25-2016, 01:08 PM   #7
thelostartof
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And most Important question.... What kind of dyno? Mustang vs dynojet might show 20-30whp difference. At the numbers you are at.

Just because of the M cam I will say 270whp / 325trq, who knows how hard you are pushing the timing map but you are running Semi proper sized turbo moving more air at higher psi. The 90+ and M cam will be holding you back the most.
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Old 10-25-2016, 01:10 PM   #8
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225/260
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Old 10-25-2016, 03:44 PM   #9
roflcopter
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Quote:
Originally Posted by thelostartof View Post
And most Important question.... What kind of dyno? Mustang vs dynojet might show 20-30whp difference. At the numbers you are at.

Just because of the M cam I will say 270whp / 325trq, who knows how hard you are pushing the timing map but you are running Semi proper sized turbo moving more air at higher psi. The 90+ and M cam will be holding you back the most.
It was on a Dynocom this last time, will probably be on a Dynojet next time.

If I can get in the 270-275whp range at that boost level I'll be pretty happy. I'm not running much timing up top yet(9-10* btdc at 21psi) since I haven't had proper dyno time to really dig into tuning it properly. The turbo should be properly sized for making 340ish at the wheels once I crank the boost up, definitely won't be the bottleneck unless I went over 30psi.

The 90+ is actually ported pretty well, we hogged it out and refaced the flange on my buddy's mill and got everything lined up for the t3.

How much of a difference am I going to find if I go to a different cam? I've been considering it but haven't done it due to trying to sort everything else out still.
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Old 10-25-2016, 05:06 PM   #10
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Cam should be 20-30whp depending on boost and what setup you have before and after. Going from a non turbo cam to one with more lift that is setup to work properly with boost you can net good gains.

When I ditched my 90+ for a poorly made header with a real collector I gained 30whp.
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Old 10-25-2016, 05:19 PM   #11
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Holy crap... those are some mad gainz.

I'll definitely look into those options down the road, currently if I can make in the neighborhood of 320whp with just a bit more boost I'll be happy. The bottom end and trans probably won't be able to take much more than that anyways.
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Old 10-25-2016, 06:48 PM   #12
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Over 300hp my goal as well
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Old 10-25-2016, 07:46 PM   #13
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That being said, 270whp
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Old 10-26-2016, 12:22 AM   #14
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265whp with 91 octane gas.
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Old 10-26-2016, 08:59 AM   #15
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Quote:
Originally Posted by roflcopter View Post
Holy crap... those are some mad gainz.

I'll definitely look into those options down the road, currently if I can make in the neighborhood of 320whp with just a bit more boost I'll be happy. The bottom end and trans probably won't be able to take much more than that anyways.
With your current setup I do not see you being all that close to 320whp even with more boost, @ least as long as the dyno operator isn't messing with the numbers, especially with an auto.
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Old 10-26-2016, 10:49 AM   #16
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I wasn't thinking about the cam when I made my guesstimate. On a similar turbo I wasn't gaining much more power by cranking up the boost past ~20ish, on a 90+ with a smaller 0.48 hotside. BUT i was on e85 and had an IPD cam in it. 299whp was the most I saw thru the auto at 21, power was dropping off pretty hard in higher rpms.
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Old 10-26-2016, 12:27 PM   #17
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Quote:
Originally Posted by turbotankshane View Post
I wasn't thinking about the cam when I made my guesstimate. On a similar turbo I wasn't gaining much more power by cranking up the boost past ~20ish, on a 90+ with a smaller 0.48 hotside. BUT i was on e85 and had an IPD cam in it. 299whp was the most I saw thru the auto at 21, power was dropping off pretty hard in higher rpms.
Do you have a picture of that dyno graph?

With my holset @ 20psi on LH with the v15t cam (same as ipd) I was still making more power @6300+ rpm when the guy lifted. On that dyno I did 301whp on pump gas.
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Old 10-26-2016, 01:32 PM   #18
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Its on here somewhere, I'll try to find it. Correction, I was also on the pre-90 manifold at that point as well.

I never had a chance to dyno again after installing a ported 90+ and swapping to a t5.

Here ya go.
http://www.turbobricks.com/forums/sh....php?p=5377212
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Old 10-26-2016, 01:46 PM   #19
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How're the guys down there at emerald coast motorsports doing? Tell Webb I said hey
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Old 10-27-2016, 12:21 PM   #20
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I'll definitely do some experimenting when I get it back on the rollers and see where exactly the restriction lies... I know the turbo will be fine for more boost than I plan on running, and the intercooler is doing it's job perfectly(haven't seen an IAT over 100*F even at 21psi) so cam/head/manifold are really the only other places.

The guys at Emerald Coast are doing well! Definitely expanding and gaining more of a following, it's cool to see a shop that really is the whole package and a great group of guys.
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Old 10-28-2016, 09:32 AM   #21
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yeah they seem to be doing well.
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Old 10-28-2016, 11:11 AM   #22
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240whp/290ft-lbs
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Old 10-29-2016, 05:20 AM   #23
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270ish
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