Another Injector question...which 550s?
#1
Another Injector question...which 550s?
Ok, bear with me guys, I'm new to this forum and to turbo-ing the Miata. I have a '94, all stock right now. I'm starting to gather parts for my turbo upgrade.
Here is my general plan of items to use (note, subject to change at anytime )
Rebuild the bottom end to oem.
'99 Head (along w/ Intake & fuel rail)
GT2560R
Begi Manifold
Begi DP
EVO FMIC
Megasquirt N' Spark
My question is, since I will be switching over to a '99 fuel rail, which injectors fit these? Do the RX7 550cc still fit? I plan on running RX7 injectors, but I am not quite sure which high Imp RX7 550s fit. Will the primaries off an FD fit too? Do the plugs still fit the 550s?
Any help is greatly appreciated. I am sure you haven't heard the last of me as I build this thing.
-Jason
Here is my general plan of items to use (note, subject to change at anytime )
Rebuild the bottom end to oem.
'99 Head (along w/ Intake & fuel rail)
GT2560R
Begi Manifold
Begi DP
EVO FMIC
Megasquirt N' Spark
My question is, since I will be switching over to a '99 fuel rail, which injectors fit these? Do the RX7 550cc still fit? I plan on running RX7 injectors, but I am not quite sure which high Imp RX7 550s fit. Will the primaries off an FD fit too? Do the plugs still fit the 550s?
Any help is greatly appreciated. I am sure you haven't heard the last of me as I build this thing.
-Jason
#11
Forgive me if this is a stupid question, but how do you "banance" and "blueprint" an injector? Do you mean cleaned and flow calibrated? heh That's a question I never understood about engine rebuilds either was the "blueprint" part. What exactly does "blueprinting" an engine mean? Isn't a blueprint made for something before it's raw machined?
-LAZ
-LAZ
#12
Usually blueprinting is the "going the exta mile to perfect the parts". Blueprinting an injector means that it's been flow tested before and after cleaning, and hopefully matched to the other injectors within 2% so that they are all flowing around the same cfm. Blueprinting an engine means that the builder has taken all the necessary steps to use parts that fit together perfectly, usually to the max of the manufacturers tolerances. This includes pistons, rods, and a crank that all fit together perfectly, utilizing optimum bearing clearances and bore sizing.
#15
The square ones are low impedance arn't they? Or was that just the RX-7 ones?
I always wondered what people mean when there engine was blueprinted. I'd look under there hood and just see a GM engine or something and tell them they didn't design ****. GM built it. lol I guess it's another one of those "adopted word meanings". They also hate it when they tell me they "Built a '69 Chevelle" and I'd say "GM built a '69 Chevelle, you just assembeled it." :P Ah but I'm just a smartass like that.
Anyone have headrest speaker-cups they wanna sell?
-LAZ
I always wondered what people mean when there engine was blueprinted. I'd look under there hood and just see a GM engine or something and tell them they didn't design ****. GM built it. lol I guess it's another one of those "adopted word meanings". They also hate it when they tell me they "Built a '69 Chevelle" and I'd say "GM built a '69 Chevelle, you just assembeled it." :P Ah but I'm just a smartass like that.
Anyone have headrest speaker-cups they wanna sell?
-LAZ
#16
Boost Pope
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FWIW, I'm running Bosch 42lb (440cc) injectors which are marketed as Ford Racing parts. They have the square tops, so I removed the harness and re-built it. That was actually the easy part. The hard bit was the collar of the injector where it mates with the fuel rail. The design is somewhat different from stock, such that I had to trim away a fair bit of plastic with a dremel, then hope & pray the first time I test-ran the fuel pump that gasoline wouldn't spray everywhere.
I wish I'd taken pictures, but I left my camera at work that weekend...
#18
Boost Pope
iTrader: (8)
Join Date: Sep 2005
Location: Chicago. (The less-murder part.)
Posts: 33,046
Total Cats: 6,607
Dammit, why couldn't I have thought of that a month ago when I couldn't find RX7 injectors anywhere and wound up with these Bosch ones that I had to hack?
Somebody buy those quick! Send 'em to Five-0 for cleaning and you've got a helluva a deal!
Somebody buy those quick! Send 'em to Five-0 for cleaning and you've got a helluva a deal!
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