hi rocket , my a/c is out the gt42 wont be a problem neither would the t51 same size but i want a gt42 but a small one, i cant have it spooling after 6000 revs mate i dont wanna rely on nos to make it kick in.


i want to use it doing the cash and carry same as the nutter here with the mr2 nice one bros i used to do all sorts of stuff in it i used it as a van haha buti had to stop the crash scared me, i cant spare any more cash to fix it anymore.


i luv simons turbo but i want a lil more torque i might get simons turbo if the gt42 is too bad for my evo



kevin if u ever went in simons car u would know, his car is the smoothest at idle and when in power, simon and mark mapped it and mark said the same thing, he said it was beautiful on the dyno and it was fully spooled up 4000 revs with a turbo that is rated for 650 bhp thats very good and with a stroker simon made over 750 with this same turbo but my prob is the housing is too small for my engine size

and lol too right i luv the net i want to try something mate, as u saw manuals post he has a t66 and with a 5 speed normal gearbox the video i posted it here, taking it easy he done a 10.72 on a syncro gearbox fecking class , a fully loaded evo with all the electrics and plastics in it


i want something similiar but more torquey


pete i want it perfect first time

kev u may not know but i changed my spec 3 times already i cant make up my mind

 

alan i havent got it back, where did i say that quote must have meant something else lol

yeah mate the other map can be loaded with a touch of a finger with the laptop


and yeah thats a huge turbo maybe good for a truck

 

Your 8th post Moses, about + 3/4 the way down.

When do you get it back?

 

mate must have meant something else i cant still find it i will check it later


alan i could have had it back next week and a half , but now maybe 3 to 4 weeks again, i need to sort out the turbo


alan were gonna have fun mate woohoo ameen

 

You're no kiddin' there buddy.

Cannae wait tae see the look on your face the first time ye plant it!!

I'm bringin' the camera!!

 

lol thanks but we wont take it on that road, we might loose it and smash it, we will keep it on the straights mate


will be awesome

and thanks for all times alan and pete

 

Moses, even for you that doesn't make much sense Either you want figures, in this case 700lb/ft or you don't.

Quite why you want 700lb/ft is a little beyond me, do you just want a car that will wheel spin in 4th when it comes on boost?

 

mate with 700 ft torque im guaranteed, if i **** up like i usually do at launch even if i loose a few secs when i get going the 700 ft torque will come in handy and i wont get screwed by a 140 bhp nova or corsa he ehee it has happened but only up to 15 mph im not good at launching mate


i had a few nova and corsa boys in my time, baiting me and when i feel like ripping them apart, they usually beat me to 15 or 20 mph coz i bog down but after that im all sexy baby

 

Moses,

It's not the exhaust housing that is causing the problem, it's the size/trim of the "exhaust wheel".

The other problem you have, is the bigger the turbo, the "harder" it will be to make the torque.

If you want a lot of torque, you need to be able to bring the turbo in early. As an example, with a big turbo, you may not get full boost until circar 5000rpm, and if we use 5252rpm as a base, if you wanted 700ftlbs, you'd also need 700bhp at the same point.

The higher up the RPM, the harder it will be to make the torque. 700ftlbs @ 6000rpm, would = 800bhp !!!

Rannoch made 526ftlbs @ 4000rpm (1.8bar approx)on his 2.33lt Subaru, and that's only 412bhp. GT30 hybrid (similar spec' to your HKS).

I reckon you'll need to be able to pull the best part of 2.75bar by 4500rpm to get anywhere near.

There isn't a smaller GT42. I'd look at a GT35 exhaust end, and either a GT40 compressor cover/wheel, or GT40 cover, with the small GT42 compressor wheel, but you'll have to run way more than 2bar.

Mark.

 

hi rocket it is the exhaust housing this is the same turbo that made 770 bhp on simons car before the caravan men blew his engine up and simon also made 680 torque i think



and sam has a 3037 and only at 1.6 bar he made 447 ft torque and later he got 500 ft torque, mines would have been alot more if it wasnt coz of the housing

but im gonna speak to turbo dynamics again and see whats the best option

and cheers rocket your some man mate u know your turbos i dont know much about techie stuff at all

 

Ah, makes perfect sense now Moses, with just 610lb/ft you never know - that warm hatch just might have enough power to beat you

Go on, just admit this 700 figure is all that's important to you, we wont make fun of you

 

Moses,

Getting 500ftlbs is not the problem, that's easy. 700ftlbs is very different.

I don't know the Evo engine very well, but it seems odd that Simon can get so much more power out of the same turbo. Is the 2.3lt really THAT inefficient, compared to the 2.2lt ?.

Another point, is that HKS rate the GT3240 to 580bhp, so either they under rate them by 25%, or the fuel Simon is using, is worth the best part of 200bhp.

He gives the turbo spec' as "HKS GT3240 Special Full Turbine Kit". I wonder if this kit is a GT35 exhaust conversion ????????

Mark.

 

Hi Moses

Stop chasing figures and get the car back on the road again, i know you are scared of it already but just drive the bugger, at this rate you will be picking up your pension before it see's the light of day again.

Any way we all know you are only after 700lb-ft o torque so as you can drag that lard **** of your's about. HA HA HA :P

Cheers Dougie

 

lol rocket i dont think u read what i typed

it made 610 at 1.7 bar and simon made his power at 2.5 of cours i would be near it if the housing didnt stop us running more boost and yes it makes alot of difference his is a 2153cc mines a 2300 something cc stroker and i have his old turbo and it aint modified as a gt35 he has a gt35 now and made 810 bhp on it and i have the same turbo of his , he used it to beat ron kiddel at santa pod and he bogged down , ron overtook him and then simon hit the limiter and slowed down and still he reeled in ron and did a 10.89 quarter mile with a syncro box standard shotpeened while making 2 errors the video is everywhere u will need to find it God of the pod one.


same turbo i have in mines i bought it off him and he uses the same racefuel and like i said mines at only 1.7 bar made that so would have made alot more at 2.5




haha robertio mate i swear i aint chasing numbers i want a car that will do a good quarter mile even if i screw up the launching and if i wanted i could have got a gtr34 and im sure would have got my numbers haha i was offered a swap but i said no way , im an evo man first then a skyline and cossie man.



lol @ dougie i wish i could use a smiley but this new forum doesnt let me use more smileys i already tried and it deleted my long post when i went back so i had to type this again mate but nice one, lol lard **** u talking about yourself bros haha.


i made my mind up a gt42 or a gt3542 with a bigger housing but im gonna ask them to change some stuff in a gt42, its too big i want it smaller so it will spool up quick without using a nos spool up kit

cheers

 

Moses,

I did read your post, but it doesn't make sense that you both used the identical turbo, and fuel, and you're max'ing the turbo @ 1.7bar/610bhp, and Simon is able to run 2.5bar/770bhp, without the BP problem.

I find it hard to believe that there is such a dissparity in thermal, and VE, between the 2.3, and 2.153 engines, let alone having had nigh on identical results to you, on a VERY similar turbo, be it on a Subaru engine.

Is there a big difference between the heads/cams you have, to Simons ?

Speak to Craig, but I'm pretty certain there aren't any options for a smaller exhaust side for the GT42, and that's the side that's going to cause you massive lag problems.

Personally, I think a GT35/40, maybe with a GT42 compressor wheel, and the .82 exhaust housing will give you the results, if you're prepared to run enough boost to get circa 700ftlbs, and the engine will hold together.

If you go too big, you'll struggle to drive the turbo.

As I said previously, I reckon you're going to need circa 2.75bar @ 4500rpm, and race gas to get anywhere near the torque, and you won't pull the boost on a massive turbo.

Mark.

 

thanks mate

his cams are different i think my duration may coz a lil prob its a 272 both ways


he told me to leave it coz he might have a way to sort it but im just gonna go for a bigger turbo, mark shead was mapping it at the time he is the cossie man and of my my hero's

he said their was alot of back pressure , and good idea u reckon with a gt42 compressor wheel and a 0.82 housing on a gt3542 will it give me alot of power and how much and also is it worth putting on a 1.06 housing, im getting it free from craig to test them both

cheers


edited to add 700 ft torque doesnt mean i want it exactly that but close

cheers

 

Mark

I might have picked up wrong here but Moses has an EVO as has Simon?, not a Subaru?

 

lol cheers alan i didnt think of that


or maybe mines a special evo sti8 scooby pmsl

 

Gonnae tell me something Moses?

 

what r u asking mate


i just checked me chasis number its def an evo scoob hee hee

 

Where do the scoobs rank on your list of fave rides?

 

You missed something out.....





ladies man...

 

Alan,

Yes, I realised that

I'm trying to understand why the identical turbo is getting such differing results.

I could understand it if Simon wat using race gas, and Mose's pump fuel, but this isn't the case.

I find it hard to believe that there is SUCH a disparity between a 2.3, and 2.153.in terms of efficiences.

I'm also wondering if similar results would be seen on a stroked 2.0lt Subaru engine ????

Moses,

If Craig will lend you a turbo to try, see what you get. Why not go for the same spec' as Simon, and see how that performs on the 2.3lt.

Mark.

 

All things being equal, i would think you should get similar results, an engine's only a fancy pump after all.

Did Moses not buy Simon's turbo?

 

disparity between a 2.3, and 2.153

Hmm..is the difference in bore or stroke?

 

alan i did mate i had both his turbos one i sold to sam and the other i kept


i changed my specs remember my cams were to suit the greddy but then i switched to the hks


and their is a difference rocket with the stroker 2.2 also takes u to 8200 revs and the 2.3 only 7600 and torque wise their is a lil difference and the 2.3 gives u more bhp as seen on my base map at 1 bar only it made 460 bhp not even on boost mate



lol alan yeah of course im a ladies man 100% haha , and scoobs are my second fave along with cossies and skylines, but the ra classic scoob and sti4 are my fave scoobs


rocket hmm craig lending me a new turbo hmm thats a hard one mate but i will try and also simons spec is a lil different from mines engine wise , head is a lil different and pistons etc and cams

 

alan i dont know but i can check

i bought the 2.3 for the greddy alan, remember i changed my mind and when simon had the gt3240 off his car i took it by force , he still wanted to keep it if he didnt like the gt35 but i asked him as a friend and took it off him at my price hahaha , us scotsman are pathetic when it comes to money



im the only one in the uk who used a bigger turbo that a 3037 on the 2.3 so it was the first time it happened

and the stroker crank was only 600 something plus vat and thrust bearings and niterite cost under 200

steel stroker with pistons and rods were 3000
and i should have waited and got me a billet steel one made , i have jun rods and j& e pistons customised to simons spec

 

one more thing the most happiest moment will be when i learn to launch like kev sharpe and also my mate kev p1


i cant afford the dogbox yet but i need to get my diffs and driveshafts and then im gonna try to go to crail the same time as kev sharpe and get as much runs against him , coz that will teach me how to launch and i cant find a better teacher, if i launch like him then , come on u 1000 bhp ******* im coming after u lol sexy moses kicks goliaths *** i would luv that


moses the liberator

moses divides the airstrips


moses kicks pharoahs *** hee hee

im like a kid its awesome

so i hope kev u teach me launching so i will luv alot of runs next to u nice

 

first sensible thing you said this whole thread , you will be lucky to make it all that way without a dog box I think you need to buy a trailer and a shogun , not a bigger turbo , especially if you only have a 7600rev limit to work with.

there is a guy on this forum called christianr , who is selling a NOS kit to help you low down if you get something bigger.

 

Alan,

Agree they are just glorified pumps, but on that basis, and all things being equal, you'd expect a bigger pump to flow more air, RPM, for RPM.

However, what we need to work out, is why one engine/turbo can run 2.5bar, and the other max's out at 1.7bar.

If anything, higher RPM would make things more difficult, in terms of getting the air in, and BP.

Would you expect the same turbo, say a TD05/6 20G to have a much bigger BP problem on an EJ2.5lt, over an EJ20 ? I'd expect the turbo to make similar power on both engines. Torque is another issue.

Mark.