Got my 2.7 big bore!
07-08-2008, 01:50 PM
#61
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I wasn't worried about wiggle between the strut and mount. It's the strut that concerns me. In my limited experience with these cars, I have seen two broken struts and one that had deformed where the threads endered the jam nuts. If you're eventually going back to the stock sensors, I'm sure it will be fine for a while.
07-08-2008, 03:42 PM
#62
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the rc injectors are supposed to have higher fuel pressure capabilities.
07-08-2008, 07:09 PM
#64
www.racetronix.com
120s are the only size they have for these, otherwise I probably would have gone with 100s. I chose them because I wanted lots of overhead for future upgrades, and alcohol safe for eventual E85 use. When I read that these have a faster opening and closing time, that sealed the deal assuming they work
120s are the only size they have for these, otherwise I probably would have gone with 100s. I chose them because I wanted lots of overhead for future upgrades, and alcohol safe for eventual E85 use. When I read that these have a faster opening and closing time, that sealed the deal assuming they work
07-09-2008, 11:59 AM
#66
Nordschleife Master
If you have 3 bar base fuel pressure you'll reach 58lbs total fuel pressure at only 0.9 bar of boost (or 13 psi). I can guarantee that they don't shut off at that pressure....
07-09-2008, 06:22 PM
#67
Thats a telling statement, thank you. Can you reference the info that you have that states the opening times on these that you purchased? Because 120 may be too SMALL for me, but I will need very fast times to deal with, as you suggest, a good idle with the E85. Where as up to 50% more will be needed in the power band (6:1 AFR is reasonable for high torque and cool power on E85 or E98) only as much as 20% more is needed with E85 at idle from regular gasoline.
I don't want to buy slow 160s, but the 120s may need more fuel pressure that they can take - from the one statement on here about thier high pressure problems.
I don't want to buy slow 160s, but the 120s may need more fuel pressure that they can take - from the one statement on here about thier high pressure problems.
07-09-2008, 06:24 PM
#68
07-09-2008, 06:39 PM
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it seems the racetronix 120's are NOT the same as the delphi injectors, though they share the same disc design. are the racetronix modified delphis? who actually makes the racetronix injectors?
i have heard from three different local 951 track-dedicated racers that the delphi disc injectors 'lock up' occasionally when run at fuel pressure greater than 58lb for extended periods (ie; on-boost in fourth and fifth gear). that was the main reason given for going with the RC injectors instead of the delphi.
in fact, one of them offerred to give me his old delphi injectors, but i decided to just buy RC injectors instead.
i'll probably pick up the delphi injectors and have a local shop load-test them at 60lbs to 70lbs and see if they lock up, and compare them to the RC injectors. maybe i'll make a separate injector-vs-injector review thread.
i could compare;
1) stock bosch
2) siemens 55lb
3) delphi disc
4) rc disc
i have heard from three different local 951 track-dedicated racers that the delphi disc injectors 'lock up' occasionally when run at fuel pressure greater than 58lb for extended periods (ie; on-boost in fourth and fifth gear). that was the main reason given for going with the RC injectors instead of the delphi.
in fact, one of them offerred to give me his old delphi injectors, but i decided to just buy RC injectors instead.
i'll probably pick up the delphi injectors and have a local shop load-test them at 60lbs to 70lbs and see if they lock up, and compare them to the RC injectors. maybe i'll make a separate injector-vs-injector review thread.
i could compare;1) stock bosch
2) siemens 55lb
3) delphi disc
4) rc disc
07-09-2008, 07:04 PM
#70
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I found a thread on one of the megasquirt forums that indicated the opening time is around 0.7 or 0.75ms (I think). Ill try to find that thread, I think I had the bookmark on my laptop that was stolen a few weeks ago.
Ill be testing the opening time myself once I get everything hooked up, its quite simple to do assuming you have an oscilliscope.
07-09-2008, 07:08 PM
#71
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it seems the racetronix 120's are NOT the same as the delphi injectors, though they share the same disc design. are the racetronix modified delphis? who actually makes the racetronix injectors?
i have heard from three different local 951 track-dedicated racers that the delphi disc injectors 'lock up' occasionally when run at fuel pressure greater than 58lb for extended periods (ie; on-boost in fourth and fifth gear). that was the main reason given for going with the RC injectors instead of the delphi.
in fact, one of them offerred to give me his old delphi injectors, but i decided to just buy RC injectors instead.
i'll probably pick up the delphi injectors and have a local shop load-test them at 60lbs to 70lbs and see if they lock up, and compare them to the RC injectors. maybe i'll make a separate injector-vs-injector review thread. i could compare;
1) stock bosch
2) siemens 55lb
3) delphi disc
4) rc disc
i have heard from three different local 951 track-dedicated racers that the delphi disc injectors 'lock up' occasionally when run at fuel pressure greater than 58lb for extended periods (ie; on-boost in fourth and fifth gear). that was the main reason given for going with the RC injectors instead of the delphi.
in fact, one of them offerred to give me his old delphi injectors, but i decided to just buy RC injectors instead.
i'll probably pick up the delphi injectors and have a local shop load-test them at 60lbs to 70lbs and see if they lock up, and compare them to the RC injectors. maybe i'll make a separate injector-vs-injector review thread.
i could compare;1) stock bosch
2) siemens 55lb
3) delphi disc
4) rc disc
07-09-2008, 08:23 PM
#72
Well I guess you are the tester here then. The E85 will have slightly less lubricity than normal gas, so any "stickyness" will show through quite quickly. Though on the site it DOES say methanol friendly, which is much much worse than E85 in lubricity.
07-09-2008, 09:54 PM
#73
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Probably in 2 or 3 weeks, since a test without fuel pressure is pointless.
07-10-2008, 02:01 PM
#74
No Ethanol in Canada Eh? Did you look into getting E98 delivered in barrels? Never visit a gas station again.
07-10-2008, 03:08 PM
#75
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