max boost on my engine with a gt3582r

[diesel des]

Just check how much boost still makes HP in the dyno, when the turbo is maxed out it Will not make so much more power, mostly heat.. I use an gtx3582r an 2.7bar boost, enough to make 726whp... But above 2.7bar it only generated heat..

Details please. Fuel, cams, displacement Etc. Any power graphs?

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[blackS2]

Another 2,2l, RC-SH750, GT3582 0.86, 8:1, 100 octane, 1,8 bar, bad camshaft timing on 7a cams, trigger error at 6500rpm (VEMS 1.1.96 - 2013), stock head. Not able to go over 1,8bar at 6000 because EGT/IAT to high in 4/5/6th gear...

[quattro-nick]

is this a dyno sheet? 570hp - 800 nm ?

[blackS2]

is this a dyno sheet? 570hp - 800 nm ?

you read the wrong axis

right NM red
left KW blue

[quattro-nick]

okay,about 340 kw and 570 nm
normaly i not gonna have iat problems because i use W/M injection and this is activated from 0.5 bar until 2.0 bar boost
my goal with gt35 and stock head is 600 hp
once with my gt3076r i've had 520 hp(crank) and 635 nm on the dyno

[blackS2]

on the top of the sheet is the result - 331kw/585Nm...

W/M injection was present but off on dyno...

[quattro-nick]

i find that low numbers for a gt35?

[blackS2]

i find that low numbers for a gt35?

Me too

[diesel des]

Another 2,2l, RC-SH750, GT3582 0.86, 8:1, 100 octane, 1,8 bar, bad camshaft timing on 7a cams, trigger error at 6500rpm (VEMS 1.1.96 - 2013), stock head. Not able to go over 1,8bar at 6000 because EGT/IAT to high in 4/5/6th gear...

What did you mean by bad 7a cam timing?

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[Quattronaut]

Bad cam timing and trigger issues are a quite senseless base for a dyno sheet imho...

Garrett shows all his permformance maps, so where is the problem? 2,4 bar as peak boost and 1,9 at peak power rpm are numbers where the turbo is running safe and producing good power. Higher numbers lower turbo efficiency and raise temperatures faster than power, so you need very good IC and headwork to still benefit from that. 2,8bar max and 2,1 at peak power is the range were you getting real dangerous turbo rpms.

[blackS2]

What did you mean by bad 7a cam timing?

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Both cams were advanced 4deg by adjustable sprocket. For optimal cam setup an adjustable camgear on inlet cam is also needed to adjust both cams individual.

We were not able to get rid of the trigger issues so this was the only dyno run we did.

This engine does not exist anymore - changed everything around the engine but no new dyno run. Trigger issues solved by firmware 1.2.3x last year.

2,4 bar as peak boost and 1,9

this are true numbers... but my intercooler was to small

[quattro-nick]

count this for all turbo's? in the past with my gt3076r i drive on max load with 2.0-2.2 bar boost continuously from 3800-7000 rpm!
so you suggest to drive with no more than 2.1 bar boost continuously on a gt35?
is it true that when you are on a dyno you may set the boost higher with 0.1-0.2 bar steps if you still making power with steps from 15-20 hp until it stops making more power?
this of course with an eye on the iat and max injector duty cycle

[V6quattro]

count this for all turbo's? in the past with my gt3076r i drive on max load with 2.0-2.2 bar boost continuously from 3800-7000 rpm!
so you suggest to drive with no more than 2.1 bar boost continuously on a gt35?
is it true that when you are on a dyno you may set the boost higher with 0.1-0.2 bar steps if you still making power with steps from 15-20 hp until it stops making more power?
this of course with an eye on the iat and max injector duty cycle

Im also running 2.3bar from 5000-8000

[blackS2]

Im also running 2.3bar from 5000-8000

As I remember from BITBURG you are using E85?

I dont know the reason but my EGTs went trough the roof when boosting higher than 1.8 at redline...

[GazzaG60]

id suspect too little timing at high rpm. can you not get more in?