Can I put a 20g on a standard engine ...
 

Ok so just looking for a few more responses from my thread yesterday... I would really love a sc38 for my 99 type r but cost wise unless somthing second hand comes up I doubt I will be getting one, as for 1k I could get a decent 20g and a decent set of front brakes..

So it realistic that I can fit a 20g to standard 99 engine or would it be more realistic to go 18g, I would be happy now with 370 /380 bhp.


Many thanks

Td05 18g would do the job then fella plus some 550 injectors and a few othe bits and bobs standard rods are the weak point plus you need to add on the cost of getting the car mapped

Would the injectors not max out, I mean I need to no the max a 18g and 550's can take if pushed

Im running a 20g on my standard engine. Works fine pal

Hi sunny

What injectors are u running and what bhp are u achieving...

Cheers :thumb:

550s with a good fpr are good for around the 400 mark with supporting mods, but thats about the accepted limit

Is that 18 or 20g

You'll max out 550's before 400.

Possibly true also. I have heard of 410 on 550s, but Im pretty sure mine are maxed at around 385! (thats with an FPR giving an extra half bar of fuel pressure)


(mine is a 20g)

To run a 20g on a classic without incurring problems, you could do with:
550 or 740 injectors,
Ported headers,
a Harvey up-pipe.

And a remap...this last is vital, unless you want the engine to go pop.;)

Just bolting one on will make more power but it will be laggy and will max out standard injectors, maybe running lean enough to det itself to death:(

Hi alcazar ..

I already have fitted a set of Harvey ported headers and up pipe, my main issue is I don't want the engine to pop..
I'm looking for around 370 bhp so what would be best, a 18 or 20g with 550 or 740 injectors..

And yes I only had the car mapped last year but will be going in again once the work has been carried out :)

I've got 740's on mine, but it's a forged 2.5.

Your mapper might be best to advise which injectors and turbo.
If you want to go to 400 then a 20g will be called for, but be advised that at that power level on mine, Harvey said I could use tubular headers too, which I have.

400 is the line for gt specs (tubular headers) but ported headers with a Harvey up pipe be fine with 20g. Have you got 550 s or you still to buy injectors? If to buy get lateral to modify yours then no probs more than enough with head room for next power upgrade

Nope still needing the 550's ... I put an add up in the wanted sec for the turbo, Inj & new brakes...

What price do lateral charge to re flow, currently running 440's

Cheers

csfz, check out my Garage.... ;)

Thanks joz ...

I think I will stick to the plan of 550's & a 20g then ( i just need to find them lol ) do I need a fpr I mean its alot of work or am I safe using the oe fpr..

Cheers

222 quid mate they work a treat.

Theoretically it should be fine.

But a decent brand adjustable FPR is a good idea simply because it's brand new and prob got a superior quality membrane. And of course, you have the option of upping the fuel pressure a little, to help with 'underperforming' injectors...

You won't go wrong with the Fuelab jobbie.

possibly a bit late now but my RA made 395 with an SC38 and 555cc Nismos, standard headers and uppipe and a bitsa turbo back system.

Now running harvey headers and uppipe, harvey built 18g and the same 555cc injectors, I dont have a print out but i'd say its easy 370-380 if not more. 1Bar at 3100 and full boost (1.45) at 3300.

Don't suppose u still have the sc38 that u would like to sell :)

I've been offered some 740 Inj so may just grab them while I can, I have a feeling its not what I want more what comes up on the market :( I was originally thinking 550 Inj with a 18g now I'm thinking 740inj with a 20g...

But I guess I will have to see what comes up

740s will easliy cover the 20g's output. And when mapped, they won't be too bad at idle/part throttle wise

And at least you'll be future proofed for c.490-520bhp odd.

I dont still have it but I may know a man that does have one to sell... will ask him

Pm sent :thumb:

You can get bigger injectors than you need mine were on Simons old car running like 600 odd bhp now on my puney 400 bhp car.

Lol ... Dose it make any difference to petrol consumption ?

Was this also on standard rods and pistons fella

Na wouldn't think so mate always been terrible lol.
Mark ra I'm on standard type r v3 engine at 402 and 380 over year and a half now

See what I don't get is that standard rods won't take more than 1.65 bar boost so I'm under the impression that 350bhp was pushing it on a standard engine

So a bigger turbo needs less boost to run the same power as a smaller turbo I.e. TD05 16g to a 20g? Feel free to correct me if any of this is wrong guys, so is it a case of you can go bigger and run more power just don't exceed 1.6bar ???

1.5 bar been fine on sc40 billet.

And that gave you your 400 bhp cheers fella