Injector size and turbo replacement question 3200gt

Twinturbo

Junior Member
Messages
101
Can't for the life of me find out how big the injectors are on our 3200gt and whether there are larger replacements?
Also has anyone highflowed or replaced turbos with slightly larger direct fit alternatives

Looking forward to some technical info from u guys that I can't even find on google
 

alfatwo

Member
Messages
5,517
You can always up the boost pressure, plus an ECU mod. There was some guys years back in London who advertised 500hp Kits

But what you really want is an Assetto Corsa front anti roll bar, It'll change your life forever ;)


Dave
 

Twinturbo

Junior Member
Messages
101
Im weighing up the feasibility of tuning my 3200gt to around 500hp-600hp at no more than 1.1bar boost so after any info of anyone having done this and also oem injector sizes, fuel pump flows possible larger bolt on turbos , I know brakes, handling cooling needs to be upgraded but what are other weak links that have to be considered?
 

Boomerang_GT

Member
Messages
202
Reducing compression ration would be one of the first things to achieve 500-600HP.
The 3200 GT is at 420HP wit 98 Octane on the limit.
Afaik there are no P&P upgrade turbos but there are many specialists out there which can upgrade the OEM turbines and make them P&P.

@alfatwo: Isn't the ecu upgrade upping the boost pressure automatically?
 

Twinturbo

Junior Member
Messages
101
Reducing compression ration would be one of the first things to achieve 500-600HP.
The 3200 GT is at 420HP wit 98 Octane on the limit.
Afaik there are no P&P upgrade turbos but there are many specialists out there which can upgrade the OEM turbines and make them P&P.

@alfatwo: Isn't the ecu upgrade upping the boost pressure automatically?


Yes I'm quite sure the tunes are basically just a pressure increase to 1.1bar or 16-17psi being 1 psi below the stock fuel cut defender and a bit of trickery with fuel and timing but I'm wanting to get info about going past the normal basic performance increase as with most turbo cars
I've owned getting 40-50% extra which puts the 3200gt in the 500-600hp range doesn't require extensive modifications merely larger fuel flow ,tune,larger turbos,intercoolers strengthen drivetrain,keep a keen eye when it's on that dyno and a wideband A/F gauge too on the street ,but I need to up my knowledge on the 3200gt engine structure before embarking on such a venture as I don't want to end up with it being a Engine , Its just so **** hard to find in depth technical knowledge on this awesome engine ,
trying to contact a guy in Brazil who claims to have gone 550whp but he went extremes with ethanol and nitrous which im not even going to contemplate.

Whatever I decide to do I'll pass on my Guinea pig project knowledge to you guys so those wanting extreme power won't have to do so much trial and error
 

mjheathcote

Centenary Club
Messages
9,033
Is it really such a good idea?
I'm all for modifying in general, but the 3.2 twin Turbo is such a rare engine, if it goes bang, not easy to replace/rebuild with the rarity of parts that are no longer available.
I'd say buy a 3200 that has had an engine failure, and drop in a tuned Lexus twin turbo/supercharged instead for high power!
 

Boomerang_GT

Member
Messages
202
The stock boost pressure is 0,95 bar with 370 hp.
So how do you possibly think to achieve 500-600 hp with 1.1 bar?

Edit: Not sure anymore if 0,95 is the stock boost pressure. Read it in another forum but doubt it.
 
Last edited:

Twinturbo

Junior Member
Messages
101
Both turbos are only tiny rhf5b ihi so getting the power isn't a problem by upsizing 2 turbos at 1.1 but the lag would be increased, that's the pressure I would never exceed so engine doesn't go pop, I'm not dead set on the idea as originally bought to clean up and keep as they will be future classics, and yes access to major parts if things go wrong does kinda make me reconsider going too extreme
 

alfatwo

Member
Messages
5,517
Yes I'm quite sure the tunes are basically just a pressure increase to 1.1bar or 16-17psi being 1 psi below the stock fuel cut defender and a bit of trickery with fuel and timing but I'm wanting to get info about going past the normal basic performance increase as with most turbo cars
I've owned getting 40-50% extra which puts the 3200gt in the 500-600hp range doesn't require extensive modifications merely larger fuel flow ,tune,larger turbos,intercoolers strengthen drivetrain,keep a keen eye when it's on that dyno and a wideband A/F gauge too on the street ,but I need to up my knowledge on the 3200gt engine structure before embarking on such a venture as I don't want to end up with it being a Engine , Its just so **** hard to find in depth technical knowledge on this awesome engine ,
trying to contact a guy in Brazil who claims to have gone 550whp but he went extremes with ethanol and nitrous which im not even going to contemplate.

Whatever I decide to do I'll pass on my Guinea pig project knowledge to you guys so those wanting extreme power won't have to do so much trial and error

The standard 3200 engine internals although now a 20 year old design are very impressive for a production motor!

500hp I would of thought would be possible with a more up to date head gasket design..

The fact we had a reliable 400hp out of the old 1990's Biturbo Group A motors!


Dave
 

Rex B

Member
Messages
657
I think it was Modena performance in Germany who did / do 3 stages of performance tuning up to 450 HP with standard turbo's and a big bore engine 3.6 with larger turbo,s which l think put out 560 but cost 35k.

Rex B
Manual 3200
 

jluis

Member
Messages
1,703
I think it was Modena performance in Germany who did / do 3 stages of performance tuning up to 450 HP with standard turbo's and a big bore engine 3.6 with larger turbo,s which l think put out 560 but cost 35k.

Rex B
Manual 3200

Those guys are nuts when it comes to pricing.
Even just selling stock parts is waaaay more expensive than going to the dealer directly
 

Twinturbo

Junior Member
Messages
101
Those guys are nuts when it comes to pricing.
Even just selling stock parts is waaaay more expensive than going to the dealer directly


I'm not here to argue and upset purists of the 3200gt community
Look I know most 3200gt are purists at heart and I get that ,keeping the car stock and in great shape is really what most buy them for and take pride in having a rare Maserati v8twin turbo and that's enough for most and I totally respect that and it's quite frankly a smarter thing to do no arguing that  For what it is from factory it's a great car when it runs right

But I can't help the way I'm wired and that is to enhance and modify my cars for the potential they can be so that's why I started this discussion, I'm no novice for modifying turbo cars have made multiple 10second supras all built in my garage without bolt on kits custom pipe work everything required including fitting and painting my own body kits I love working on my cars , my last project was a turbo lotus that I tuned to be faster than a v8 lotus and a custom bodykit I hand built to replicate a Ferrari And no I haven't blown any engines I do my research,plan and calculate every aspect of a build before embarking on it, most end up as show cars only to be neglected by the people I on sell them to which really saddens me but that's life.

On my Maserati since Xmas I have so far done a complete interior transformation on it with a donor low km car cream leather the blue on blue is just not my taste and fixed small problems to make it enjoyable still battling the factory faults but now I look to see what I can achieve performance wise but if the cons outweigh the pros I will not be doing it period I'm thankful for all your comments good and bad much appreciated

Kind regards
Bjorn
 

Boomerang_GT

Member
Messages
202
Both turbos are only tiny rhf5b ihi so getting the power isn't a problem by upsizing 2 turbos at 1.1 but the lag would be increased, that's the pressure I would never exceed so engine doesn't go pop, I'm not dead set on the idea as originally bought to clean up and keep as they will be future classics, and yes access to major parts if things go wrong does kinda make me reconsider going too extreme

1.1 Bar boost pressure will always be 1.1 Bar and will not result in any increase of power no matter which turbochargers you take.
 

alfatwo

Member
Messages
5,517
I'm not here to argue and upset purists of the 3200gt community
Look I know most 3200gt are purists at heart and I get that ,keeping the car stock and in great shape is really what most buy them for and take pride in having a rare Maserati v8twin turbo and that's enough for most and I totally respect that and it's quite frankly a smarter thing to do no arguing that  For what it is from factory it's a great car when it runs right

But I can't help the way I'm wired and that is to enhance and modify my cars for the potential they can be so that's why I started this discussion, I'm no novice for modifying turbo cars have made multiple 10second supras all built in my garage without bolt on kits custom pipe work everything required including fitting and painting my own body kits I love working on my cars , my last project was a turbo lotus that I tuned to be faster than a v8 lotus and a custom bodykit I hand built to replicate a Ferrari And no I haven't blown any engines I do my research,plan and calculate every aspect of a build before embarking on it, most end up as show cars only to be neglected by the people I on sell them to which really saddens me but that's life.

On my Maserati since Xmas I have so far done a complete interior transformation on it with a donor low km car cream leather the blue on blue is just not my taste and fixed small problems to make it enjoyable still battling the factory faults but now I look to see what I can achieve performance wise but if the cons outweigh the pros I will not be doing it period I'm thankful for all your comments good and bad much appreciated

Kind regards
Bjorn

Get your self a scrap 3200 engine and take it apart and see how nicely there engineered. The conrod design for example is just superb!

There nothing in there that wouldn't take 500+hp...You might even be able to bore out the liners to 4 Litre!

Dave
 

mjheathcote

Centenary Club
Messages
9,033
Yes 1.1 Bar will still be 1.1 Bar, however a bigger turbo will flow more air at the same pressure.
More air, more power.
To be fair, it is an easy mistake to make.
The bigger the turbo, the more inertia to spin up, so more lag, that is why car manufactures fit twin turbo's even to straight in line engines so they spin up quick, low lag, but between them they flow the same volume of air as one big one....at the same boost!
 

Twinturbo

Junior Member
Messages
101
I hate to even post this I don't enjoy confrontation cause it's just not productive but it needs to be addressed
Thing that pisses me off is he's been a smart *** the whole thread bout this pressure issue but I've let it slide cause Everyone can have their say and I'm just like "hes a bit mistaken but I like everyone's input and he can have his rant I don't mind but then drops that whopper! And now trying to be smart to me ? enough is enough ok! you do not have a depth of education you think you do about turbo tuning ok it's just a fact so don't pretend to lecture or belittle me or others on here about anything to do with tuning in fact it makes me think what other rubbish you've spread on here to genuine people trying to gain actual factual helpful knowledge, Moderators might be concerned at what you've posted cause I don't care what personal attacks you have for me and I have no malice towards you but don't make others on here suffer from your misinformation!
Get educated before you post things as fact on here and for everyone's sake pull your head in!
 

CatmanV2

Member
Messages
48,546
Chap, I have no idea of relative levels of education or expertise. After 25 posts, however, I suggest that telling the moderators what they should do in what is regarded as one of *the* most successful, inclusive and knowledgable car forums out there is not a strategy likely to meet with success.

Just a thought, like, and I hope you are successful with your project.

C