720cc injector question
09-06-02, 06:15 PM
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720cc injector question
I am about to get some bigger injectors(720cc) for my secondaries. I was wondering if I need any o-rings or if they come with or what. Thanks.
09-06-02, 08:46 PM
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Originally posted by jacobcartmill
will 720s make me run incredibly rich above 3800 under load (when they come on) will it just bog me down? i installed a walbro255 pump.
will 720s make me run incredibly rich above 3800 under load (when they come on) will it just bog me down? i installed a walbro255 pump.
09-06-02, 11:24 PM
#5
New injectors probaby come with the grommets and "O" rings etc. Even the 720's from RC come with new stuff. If your buying them off of a private seller then you will need to replace them. I can't remember off hand but I don't think they're expensive.
09-07-02, 07:27 PM
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Originally posted by jacobcartmill
i have an 87 T2. i was thinking that my walbro would pump too much fuel to those 720s and make me run crazy rich. agree?
i have an 87 T2. i was thinking that my walbro would pump too much fuel to those 720s and make me run crazy rich. agree?
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09-07-02, 07:30 PM
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The GReddy fuel injectors come with no o-rings or grommets that I know of.  You need to order the top (insulation) grommet, o-ring, and lower (sealing) grommet from the Mazda dealer.
-Ted
-Ted
09-07-02, 11:22 PM
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Originally posted by jacobcartmill
hmmm. is there a cheap alternative to the safc to control fuel?
hmmm. is there a cheap alternative to the safc to control fuel?
09-08-02, 06:53 AM
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Originally posted by RETed
The GReddy fuel injectors come with no o-rings or grommets that I know of.  You need to order the top (insulation) grommet, o-ring, and lower (sealing) grommet from the Mazda dealer.
-Ted
The GReddy fuel injectors come with no o-rings or grommets that I know of.  You need to order the top (insulation) grommet, o-ring, and lower (sealing) grommet from the Mazda dealer.
-Ted
09-08-02, 10:57 AM
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Originally posted by dvls-7
are they a drop in or is there any form of mod to do to the fuel rail.....i remember hearin that anything over 550...(gsl-se) u need to mod the fuel rail....
are they a drop in or is there any form of mod to do to the fuel rail.....i remember hearin that anything over 550...(gsl-se) u need to mod the fuel rail....
09-08-02, 11:08 AM
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Originally posted by Ryde _Or_Die
They're drop-in. The GSL-SE's have 680cc's, some people say some have 720s too though.
They're drop-in. The GSL-SE's have 680cc's, some people say some have 720s too though.
The Greddy injectors are an easy way to go - exact drop in and reasonably priced. Like Ted said, you will need the O-rings and grommets from Mazda or maybe from a local parts store, but they aren't too pricey.
I've been trying to find a source for less expensive 720's that go in like stock - PrecisionTE has Delphi 720cc injectors for about $60 some bucks a pop, but I've seen them in person and they won't work without quite a lot of head scratching.
Dale
09-08-02, 11:10 AM
#18
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Originally posted by jacobcartmill
hmmm. is there a cheap alternative to the safc to control fuel?
hmmm. is there a cheap alternative to the safc to control fuel?
On the HKS Super-AFR, it does seem like a powerful unit, but it's like most of HKS's current lineup - about 5 years out of date. The Super-AFC has tons more features.
Dale
09-08-02, 11:18 AM
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Originally posted by dcfc3s
The Greddy injectors are an easy way to go - exact drop in and reasonably priced. Like Ted said, you will need the O-rings and grommets from Mazda or maybe from a local parts store, but they aren't too pricey.
The Greddy injectors are an easy way to go - exact drop in and reasonably priced. Like Ted said, you will need the O-rings and grommets from Mazda or maybe from a local parts store, but they aren't too pricey.
09-08-02, 11:21 AM
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Yep, just like the stock ones. You could, in theory, re-use the stock ones off your injectors, but they're most likely not reusable.
Dale
Dale
09-08-02, 11:27 AM
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Originally posted by dcfc3s
Yep, just like the stock ones. You could, in theory, re-use the stock ones off your injectors, but they're most likely not reusable.
Dale
Yep, just like the stock ones. You could, in theory, re-use the stock ones off your injectors, but they're most likely not reusable.
Dale
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