Converting R33 Gtst To Top Feed Injectors

[quarkgun]

Hey Guys,

Thinking about converting to a top-feed injector setup, to open up alot of options for me. Just wondering if anyone has done it, what the pitfalls and traps are. How easy was it, costs involved etc.

I've done a search, but just cant find an answer.

Thanks

[NYTSKY]

Can i ask why you need to go top feed?

[quarkgun]

I don't need to. I can always grab some direct fit nismo injectors, but i'm just wondering what the alternatives are and how difficult the job is etc

[STATUS]

1000's of top feed conversions available, 2 mins on ebay is all it takes.... a rail is about 130-140 or VPW among others has them here ready to ship.

[TiTAN]

unless you are going big injectors there isnt much point there are enough side feed options available.

[DRD-00F]

fuel RAILS on the other hand... I'm yet to find a single aftermarket side feed option... not even a cheap copy is available!

If I could swap my 850cc side feeds for top feeds, I would in a heartbeat... I'm miffed I didn't do more research...

[rob82]

I can see the appeal of top feed injectors - bosch's latest range of high impeadance EV14 injectors are available upto 1000cc/min twin spray. Bet they would tune great to. It seems that top feed is the what all manufactures are going to if not Direct injection.

[STATUS]

fuel RAILS on the other hand... I'm yet to find a single aftermarket side feed option... not even a cheap copy is available!

If I could swap my 850cc side feeds for top feeds, I would in a heartbeat... I'm miffed I didn't do more research...

what power are you making? im yet to max out the std rail on pump.

[NYTSKY]

I was at 350rwkw on E85 with the standard rail. Only changed rail to go bigger 14mm injectors.

To the OP, no need to go top feed unless you are chasing BIG power.

If only Nismo made a 1600cc injector lol The 740s i had were the best injectors i have ever used.

[DRD-00F]

what power are you making? im yet to max out the std rail on pump.

0.00kws

But it's more aesthetics then anything else...

[STATUS]

0.00kws

But it's more aesthetics then anything else...

haha, aesthetics is a valid point.

[quarkgun]

Thanks for the replies guys

[Ultimategtr]

Sorry to revive an old one, but im interested in getting a top feed setup on my R33. Main reason is because I want to get ID 725cc's. They are alot cheaper then any other type, eg SARD, NISMO.

I run a standard intake plenum. Would I be able to buy eg, an R34 GTT rail and use that or do I need to modify anything else?

Cheers guys.