my mate just blew his 300 tt up last night i have a spare na engine is it possable to use my old na engine and fit his turbos to it and sump etc and screw the boost down a bit???

 

has anyone done this ever ?? please help if this works i have to have it done asap 4 him as he needs it 4 work well with in the next few days

 

hes broke so thats why hes no able to buy a tt engine at the min and hes not getting mine!! lol

yeah lymon on here has a turbo'd NA

There was a vid on here where the Nissan Racing team turbo'd a NA...think it took them about 18 hours......but then again they have all the right equipment, a team of guys who know exactly what they are about and plenty of cash available!!!

I would not bother doing that myself......

 

........Compression ratio of the N/A engine would be too high for the turbos, plus what about oil and water feeds?

 

I'd say it would be easier getting another turbo engine and bolting it all together.....

 

Richard

you can use the NA engine, all feeds are present, will need to swap a few parts though

 

sump- for oil return and oil cooler feed

upper metal pipes for coolant feeds to turbos

TT manifolds/turbos/hardware

swap clutch/flywheel, make sure a spigot is fitted in the crank especially if the engine was from an auto.

as said compression ratio is higher, so boost is advisable to stick to stock boost

a small loss in power due to the head ports are more narrow so will be more restrictive to manifolds

everything bottom end is the same other than the pistons, so no worries there.

swap over the wastegate solenoids to the na engine

 

 

other than that you should be ok.

There was a vid on here where the Nissan Racing team turbo'd a NA...think it took them about 18 hours......but then again they have all the right equipment, a team of guys who know exactly what they are about and plenty of cash available!!!

 

I think that was the vid from Z1 motorsports (A Zed Garage and Parts specialist in the U.S) of them swapping a NA engine for a TT one rather than Turbo'ing an NA lump, unless there is another Vid I not seen. Very popular conversion in the states on the 2+2 as they never got a 2+2 TT

Turbocharged NA engine will make more power than stock TT lump becuase of the higher compression ratio....but you wont be able to increase boost much above stock.

as above yes you can but watch the boost levels as the arent as strong and wont take as much abuse as a TT lump !

i think lymon said he runs 7psi tops for safety, but still makes really good power and goes like shit off a stick because of the shorter NA final drive.

i think lymon said he runs 7psi tops for safety, but still makes really good power and goes like shit off a stick because of the shorter NA final drive.

no he runs about 12psi without no problems

Turbocharged NA engine will make more power than stock TT lump becuase of the higher compression ratio....but you wont be able to increase boost much above stock.

 

not really, the heads are restricted so unless you port them out to that of a twin turbo then the power differance will be questionable

I think that was the vid from Z1 motorsports (A Zed Garage and Parts specialist in the U.S) of them swapping a NA engine for a TT one rather than Turbo'ing an NA lump, unless there is another Vid I not seen. Very popular conversion in the states on the 2+2 as they never got a 2+2 TT

 

Your right again Legrath!!!

 

It was a full engine swap :tongue:

my mate just blew his 300 tt up last night

 

 

would it not be a lot easier to just rebuild the TT engine? what exactly has 'blown-up' ?

Lymon doesn't run the engine anymore, the big ends went :(

You can by TT engines for pennies these days, he'd be better off doing that

> Lymon doesn't run the engine anymore, the big ends went

 

Was another engine, the one in my Turboed NA still runs absolutely fine...

Is like that for 3 or 4 years now.

I run 12 psi most of the time...which is the absolute max. (90%-95% dutycycle on stock TT injectors).

I have 440 cc topfeed skyline injectors now, using a custom(ized) fuelrail and have run 1 bar a few times.

 

only problem is the turbos I used (from the TT donorcar) are now basically shot, so need to pull the engine to replace them with ballbearing tubs, but don't have much time for my own cars at the moment.

 

The NA engine definately makes more power per psi then a TT engine.

12 psi on the VG30DE is like 16psi on a VG30DETT

 

If you're thinking about doing this, give the engien a good inspection first.

My NA engine was in really good shape and had low mileage, before I turboed it.

 

A few guys in the US tried it on old worn NA engines (and tried to run high boost levels as well) and it blew .

But in all cases I know off, it were the bearings or wristpin(s) that failed..not the NA pistons

The NA engine definately makes more power per psi then a TT engine.

12 psi on the VG30DE is like 16psi on a VG30DETT

 

 

Why is that out of interest? How did you change the compression ratio or didn't you?

would it not be a lot easier to just rebuild the TT engine? what exactly has 'blown-up' ?

con rod out

> Why is that out of interest? How did you change the compression ratio or didn't you?

 

long story, but in short this has to do with the effective compression.

a 10.5:1 CR engine (VG30DE) with 12 psi boost has an effective compression of 19.1:1

a 8.5:1 CR engine (VG30DETT) will only reach that kind of figures when it runs slightly over 18psi of boost ...

 

(all in ideal circumstances)

 

the lower the static compression of an engine, the more boost you have to add to get into that same range.

 

basically, a higher ECR equals more power, but it also generates more heat which leads to detonation...that's why you can't boost too high on high CR engines.

eg. 15 psi on a 10.5:1 CR engine has an Effective CR of 21:1 !! (this is like running 24 psi on a 8:1 CR engine)

Also added heat of the turbo(s) will increase the risk of detonation, so the choise of turbocharger is very important and different on high CR engines then it is on lower compression engines, since you run lower boost levels and the the turbos need to be very efficient up to these lower boostlevels to get the most out of it.

 

the stock TT turbos have their best efficiency up to around 12 psi, then it quickly loose effeiciency and start to generate more and more heat..but in a way they are actually quite ideal for turbo charging the VG30DE engine.

...Although you'll need some safety nets, like enough fuel, good cooling and good quality intercoolers, etc.

Apologies Eric, got my engines mixed up :smash: