54 replies to this topic

[gsr sleeper]

Hey, I don't know if any one has ever touched on this topic but I would just like some input, thanks. I just would like to know how the performance would be spooling up and what boost range i would be possibly looking at. Currently running a 16g with t3 8cm housing, and ported gsr head. Reason for the change would be to swap with a friend.

[Cranked]

I'd say lag city. Stick with the 16g

[leadfoot]

on a stock block 93 i don't suspect you'll hit the 16g wall

[BYBY5L]

As eluded to by the above, the rods will be 'not keen' an thats what dictates ya boost limit
if it were me and
a- looking at a rebuild soon- 17-18psi on the 16g
b- no rebuild in mind, then 15-16 psi on the 16g should last a while, or at least long enough to entice ya into building it up

[leadfoot]

Around 170 awkw is about the limit for a 16g on a 93. Thats where it runs out of puff atleast for me thats on a built block i dont suspect a stocker will hold up to that

[BYBY5L]

Mine was dynod at 163kw atw, I'll try dig up the old slip if ya want it, was off the creatd dyno so how accurate it was... I dunno,
Put more boost in it already Kyle! Otherwise, what was the point in forging it? 10 odd kw more?

[leadfoot]

The turbo cant make any more boost its all over at 7k rpm starts to actually drop off. Engine is making a dick load more power than a std one drives alot beter than it did. Gtx 2862 near future

[BYBY5L]

Thats what I meant- new huffer!
and a dick load ya reckon- 5% outright power gain, I better not say anymore cos said wrong I might upset ya, lol

I get it may be a lighter rotating mass an it revs quicker etc, but what I'm saying is, unless ya have plans on new fuel system, huffer, ecu etc and are gunna do the box at some point, then really a std bottom end is fine, better off bracing an handling mods, but thats just my opinion/ thoughts

[VIN18M]

I don't find the 20g too laggy on my 93t, but the added timing with the E85 definitely helps bring it to life earlier

[evo-gsr]

Thats what I meant- new huffer!
and a dick load ya reckon- 5% outright power gain, I better not say anymore cos said wrong I might upset ya, lol
I get it may be a lighter rotating mass an it revs quicker etc, but what I'm saying is, unless ya have plans on new fuel system, huffer, ecu etc and are gunna do the box at some point, then really a std bottom end is fine, better off bracing an handling mods, but thats just my opinion/ thoughts

Its already been lol'd at before ..... all that work for a 5%:gain seems like a waste of time...and money. But he doesnt agree..meh
Lol at dick load too....wow!

Edited by evo-gsr, 16 November 2015 - 06:04 AM.

[leadfoot]

last dyno power figure was 180 HP at the fronts current is 220hp at all four not a 5% increase around a 22% laugh all you want this is my car and my money and I'll do with it as i please.

pink is stock motor fwd gsr ecu and either a td04 or tdo5 on gate pressure with creep
red is first tune

green is first tune red is second yes not much of a gain turbo out of puff

 

it's a 1.8 on a 16g it's making around the power GTpumps rate their 16g replacements for on 2l. no i'm not making imense levels of power but it's not a 2l either. with a bigger turbo will it make more power yes how much more depends on the turbo. just bought a house so thats a ways off.

[Cranked]

Another arguement for a 63 conversion.....

[caged]

20g will probably be easier on the rods than a 16g on 20psi.

[gsr sleeper]

So no one has ever did 20g on stock block to give actual feed back? Thanks for the input tho guys..

[evo-gsr]

You still dont get it Kyle...most GSR with similar mods, some with less mods then yours, are pushing that level of power that you have, is what we are getting at. Thats on stock rods and pistons..not a built motor too.

[BYBY5L]

^yep, thats all I was getting at, mine was a stock block with the evo bolt ons,
If ya wanna take that angle of apples vs oranges forged 1.8 with evo bolt ons vs a stock as a rock gsr, well yeah, no shit its more than 5%

Apples for apples however-
Stock block 93t w/ simple evo bolt ons= 163kw
Your forged donk with evo bolt ons= 170kw
which is a 7kw difference
so 7/170=.041 or 7/163=.043 (3 dp)
So there ya go, makes a 4.1-4.3% gain

Anyway, to the OP, the 20g has a higher optimum boost level which is probably past the known safe zone for 93t rods, as caged said, that lag might be nicer to the rods,
are ya gunna try it?

[jack be nimble]

So with big lag, low boost and dont rev it, it might survive. Lol

[leadfoot]

i would like to see a dyno sheet of a 1.8 with evo bolt ons nothing else not tuning etc making 163kw at the wheel. because i've driven that setup and it certainly wasn't the same level of power (pants dyno) as what it's running now.

 

i get it it could be making more and it's probably down to the overlap in the high lift cams (originally designed for n/a) strangling the power something i will fix eventually as with most unusual tuning ventures you gotta try different things in small increments. can't change to much at once else you'll never figure out what was holding it back. also forging a motor doesn't give you power just the ability to hold more. goal was for reliability over power forging just offer the ability to hold more reliably

[BYBY5L]

No worries, I'll have a dig around and find it,
And I'm not implying that you don't know what your doing, I know you have plans to push it further but for people with no plans to upgrade with the supporting mods, the need isn't there,
Did you run your car with a std GSR bottom + evo bits before forging it?

[leadfoot]

Yes std botom end std head evo maf evo 16g evo 510cc and evo ecu ran without a beat until it spun a harmonic balancer off. Had it not done that i wouldnt have built the engine im running now as i didnt see the point in building another motor to stock specs when i was going to likly want more in the near future

I drove the full evo bolt ons setup to sydney and almost back. As far as track time goes it ran a 13.6 at 100 new setup has had on the bad tune same et at a lower trap speed of like 95 big misfire (boostcut) in the top of 3rd and 4th = not being able to realy run it out the back door i keep.meaning to see what it can realt do now that its hopefully sorted