1227749 From a grand am?
#1
1227749 From a grand am?
I was doing a search on ecms and it looks like the 749 ecm was also installed in late 80's grand am's . Can anybody confirm this? Why is it that everbody says to look for a sunbird or syclone/tyhoon ecm?
#2
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From: In reality
Car: An Ol Buick
Engine: Vsick
Transmission: Janis Tranny Yank Converter
Re: 1227749 From a grand am?
Originally posted by AustinT
I was doing a search on ecms and it looks like the 749 ecm was also installed in late 80's grand am's . Can anybody confirm this? Why is it that everbody says to look for a sunbird or syclone/tyhoon ecm?
I was doing a search on ecms and it looks like the 749 ecm was also installed in late 80's grand am's . Can anybody confirm this? Why is it that everbody says to look for a sunbird or syclone/tyhoon ecm?
Anyway, yes it was used in other applications, at one of the syclone sites, they list all the donor cars.
It's just snazzier to say syclone rather then 91-92 FWD Quad 4 yada yada's. And the junkyard guys get tired of looking up yada yada's real fast.
#4
Joined: Jul 1999
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From: SALEM, NH
Car: '88 Formula, '95 Formula
Engine: LC9 , LT1
Transmission: TKX , 4L60E
Axle/Gears: 3.50 9" , 3.23 10bolt
The '730 will work fine with the $58 code for your application.
-- Joe
-- Joe
#5
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From: Chasing Electrons
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Originally posted by anesthes
The '730 will work fine with the $58 code for your application.
-- Joe
The '730 will work fine with the $58 code for your application.
-- Joe
RBob.
#6
Joined: Jul 1999
Posts: 11,804
Likes: 95
From: SALEM, NH
Car: '88 Formula, '95 Formula
Engine: LC9 , LT1
Transmission: TKX , 4L60E
Axle/Gears: 3.50 9" , 3.23 10bolt
Why can't you run TBI with the '730? TBI injectors low imp?
-- Joe
-- Joe
#7
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From: Johnstown, Ohio
Car: 84 Z28
Engine: 355 (fastburn heads, LT4 HOT cam)
Transmission: 700R4
Axle/Gears: 9-bolt, 3.27
Originally posted by anesthes
Why can't you run TBI with the '730? TBI injectors low imp?
-- Joe
Why can't you run TBI with the '730? TBI injectors low imp?
-- Joe
Also, I think the couple years they put th e2.0 turbo in the Grand Am would also be a 749.
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#8
Joined: Jul 1999
Posts: 11,804
Likes: 95
From: SALEM, NH
Car: '88 Formula, '95 Formula
Engine: LC9 , LT1
Transmission: TKX , 4L60E
Axle/Gears: 3.50 9" , 3.23 10bolt
Yup!
Also, I think the couple years they put th e2.0 turbo in the Grand Am would also be a 749.
Also, I think the couple years they put th e2.0 turbo in the Grand Am would also be a 749.
The output wattage is still the same, jsut gotta increase the amperage at a lower voltage right?
-- Joe
#9
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From: the garage
Car: 84 SVO
Engine: Volvo headed 2.3T
Transmission: WCT5
Axle/Gears: 8.8" 3.73
Originally posted by anesthes
I see.. So you'd need a couple transformers to use low imp injectors..
The output wattage is still the same, jsut gotta increase the amperage at a lower voltage right?
-- Joe
I see.. So you'd need a couple transformers to use low imp injectors..
The output wattage is still the same, jsut gotta increase the amperage at a lower voltage right?
-- Joe
One of Ken's injector driver boards might allow using a 730.
BW
#11
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From: In reality
Car: An Ol Buick
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The 730 was used in numerous applications where they used saturated injectors. But, in only one TBI application, and it used just one P+H TBI injector, I say TBI P+H since TBI P+H's are 1.2 ohms resistance.
The 749 on the other hand was used in an 4 cylinder application that used P+H port style injectors, which are 2.4 ohms each for the 749 can be wired to fire 2, 1.2 ohm TBI injectors.
Transformers pass voltages that very, the *ON* pulse would not be transfer. So the injector might click on but then would shut off since there is no *holding* current. Not an EE explanation just trying to illlustrate transformers don't work very well on D/C, for passing low freqs.
The 749 on the other hand was used in an 4 cylinder application that used P+H port style injectors, which are 2.4 ohms each for the 749 can be wired to fire 2, 1.2 ohm TBI injectors.
Transformers pass voltages that very, the *ON* pulse would not be transfer. So the injector might click on but then would shut off since there is no *holding* current. Not an EE explanation just trying to illlustrate transformers don't work very well on D/C, for passing low freqs.
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