View Full Version : high power n/a 3vz-fe
jap-spec-performance
10-12-2007, 10:18
hi guys and gal im jamie i run an mr2 and celica parts company in scotland
ive spoke to paul a while ago about putting a v6 in our mk2 mr2,
but i dont want to go down the SC OR TURBO route unless its needed to.
im interested in getting 300bhp out of the v6 in N/A form
now ive been thinking of the following and you lot can tell me if im right or if im well off.
port polish and flow heads (anything else that can be done for more air in)
was thinking of raising the CR on the engine as 9.4:1 or what ever it is is a bit low for the n/a as a static CR.
all the free mods to help free up those little gains.
was also thinking of making a nice custom intake manifold to get ridd of all that voodoo stuff inside the std one.
i would uprate the injectors and then map the car for as much as i could get out of it.
im also thinking of taking the downpipes to one of my suppliers and get a more performance better flowing system made and can be produced for the V6 MR2 conversion.
after that im thinking 260bhp at a very great push so cams may then be needed, anything else anyone can think of, im more a turbo tuner than an N/A so my knowledge is rather weak.
many thanks jamie
jap-spec-performance.co.uk
I'd say you'd be needing
High compression pistons - around 12 or 13:1
Lightweight rods for high rev
Cams with a 272 duration or a 280 duration at a minimum for 9krpm
Port and polish and FLOW MATCHED heads. Speak to FourVeeSix on here.
Custom intake manifold is a must with correctly sized throttle body.
Custom exhaust manifold ( 2 x 3 to 1 IIRC).
Standalone ECU
I think you might jsut about ok on the standard injectors, but you can always get some 440s
I can help with a fair few things there - pistons, rods, cams, ecu. FourVeeSix can do the heads, Paul can install it - am sure that there's an ability to club together and get it all done nicely :)
jap-spec-performance
10-12-2007, 10:38
so its possible then
next question lol, how much £££
thats a good list lol, the intake mani and thottle i could make here, exhaust mani and indemendant downpipes i could get made at a supplier.
would it be possible just to inlarge the throttle opening and fitting new buttery fly to match or will it need to be a huge throttle body from another engine lol
we can do mapping so thats not a real problem.
Set of ya springs and valves JG , main thing is really the only thing that will be original 3vzfe will be the block / heads / crank . Like JG said the parts are out there and the people to do it , you just need deep pockets :thumbsup:
jap-spec-performance
10-12-2007, 10:51
deep pockets is the problem lol
so how much is accessable with a reasonable pocket?? lol
Get JG to price some stuff up , but to get 100bhp per litre will need some work . Look at the production v6s out there most 3.2 getting 250-60 bhp . Maybe a 1mz or getting a 3mz imported would be an option .
If you're looking at the other engines, then they all have one common feature/problem. They're made as economy engines, not performance ones.
Sorting out the compression, heads, cams and mapping can change this - but ultimately, it's a compromise. Purely because of the head design.
Oh i forgot to mention....
A 3VZ-FE has seen 375bhp N/A in a marine application - so it is do-able :)
If you're looking at the other engines, then they all have one common feature/problem. They're made as economy engines, not performance ones.
Sorting out the compression, heads, cams and mapping can change this - but ultimately, it's a compromise. Purely because of the head design.
Shame they arnt like the Yank engines where there are companies out there making all sorts of aftermarket heads for them
jap-spec-performance
10-12-2007, 11:27
i did find a company in the uk that will take the v6 heads scan them into a cnc machine and make new performance heads in the cnc unit.
no idea in cost though.
Yep. But for the csot of all that, I'd rather try to get a 2GR-FSE working.
That's a great engine. 315bhp from 3.5ltr. That's already 90bhp/ltr
One other thing bhp per litre is nice but looking at the torque per litre gives you a better idea of real performance . take a good diesel round a race track and you will be hooked on torque
superchargedsam
10-12-2007, 11:44
agree with wombat, look at things like artic tractor units, 10-12 litre and onyl about 400bhp tops in some cases and still easily pulling 44tonnes behind them, a mate runs a fixed bed and draw bar and is often pulling 30tonnes and his engine has just cleared the 850,000 yes 850k mark on the same engine with only servicing done to it!
I've got a good diesel now ;)
But this place that did the CNC heads, was that Ric Wood?
jap-spec-performance
10-12-2007, 11:45
well its mainley the torque id like but has to be big torque, im coming from a 300bhp 330lbft 200sx and i miss the torque ALOT so i want something that will keep up with what i used to have :thumbsup:
jap-spec-performance
10-12-2007, 11:47
I've got a good diesel now ;)
But this place that did the CNC heads, was that Ric Wood?
thats them mate yeah. heard of them then
It's just you could reach your goal of 300 bhp but it be a real let down when driving .
well its mainley the torque id like but has to be big torque, im coming from a 300bhp 330lbft 200sx and i miss the torque ALOT so i want something that will keep up with what i used to have :thumbsup:
Then I don;t think 300bhp N/A is the way to go, personally.
I'd much rather have a SC build, with around 8-10psi. That'll net you a lovely smooth engine on these V6s, IMO.
Supercharged v6 :drool: thats what he needs :boogie:
jap-spec-performance
10-12-2007, 12:33
but not the trd supercharger though, so id have to source and find how to make a rotex unit fit as i dont think this has been done yet.
Rotrex will be a good choice - personally though, I say Whipple Twin Screw.
It has been done can't find the link to that blue widebody from europe , the rotrex or the like will be the easiest to fit but be more like a turbo . twin screw would be ideal as it would make your 3 litre feel like a 6 litre and the sound well you either love it or hate it .
thats them mate yeah. heard of them then
Thsi the Guy/place? :)
http://www.ricwood.com/
That's the geezer...
do a search for CNC Heads in google :)
And this is his other site?:)
http://www.cncheads.co.uk/
If so Prices dont seem too terrible if you are going for big power.
I was thinking it was going to be like 3 or 4k your money
I've met Ric before - he did my Unichip. VERY clever bloke and not too far from me :)
Rotrex will be a good choice - personally though, I say Whipple Twin Screw.
Uhhum....ssssshhhh Please ;)
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