terryjmatthew
SY #1770
Re: Newbie check-in w/ Syclone #1770
Yeah. I saw that and emailed him a few minutes ago.
Yeah. I saw that and emailed him a few minutes ago.
Newbie check-in w/ Syclone #1770
- Thread starter terryjmatthew
- Start date
terryjmatthew
SY #1770
Re: Newbie check-in w/ Syclone #1770
Here are a couple pics of the throttle body that is on it.
Here are a couple pics of the throttle body that is on it.
Captain Morgan
Moderated User
Re: Newbie check-in w/ Syclone #1770
ohhhhh, 7th injector setup
ohhhhh, 7th injector setup
Jimmy
Banned
Re: Newbie check-in w/ Syclone #1770
You just gotta know where to look.I can Google like a crackhead looking for a piece dropped in a shag carpet.
You just gotta know where to look.I can Google like a crackhead looking for a piece dropped in a shag carpet.
terryjmatthew
SY #1770
Re: Newbie check-in w/ Syclone #1770
Here is a copy of the email I received from Mike Dunn last night in response to my inquiry.
"Holy shit! Are you serious? Which state are you in? I remember selling it to a guy from Louisanna. I bought it from someone in Dallas, Texas. He was a GM parts employee. I purchased it when it had about 93,000 miles on it. He had about 10-12 grand in the motor.
It had Eagle rods and a Lunati cam. Also headers and exhaust. The dude sold it to me with 55 pound injectors but did not have the correct computer chip (or computer program) for those injectors. I brought it to Dynotech in South Jersey. They did a lot of work with Grand Nationals. The owner wasn't there at the time. One of the employees tuned it for me with 21 pounds of boost! It was faster than a Viper even from a roll. It was running great, but the next time I had to bring it to Dynotech, the owner was there. He told me the boost was too high and the injectors were overkill. He sold me stock injectors with a 7th injector kit (I believe the 7th injector is what dented the hood in the center).
After that, it was never running 100%. It was totally on and off. I'm pretty sure the owner from Dynotech kept the one page of my paper work that had the cam specs. I think he didn't know what the hell he was doing, or I was swindled, or a combination of both. I took it to a couple other places but I think that no one knew how to work on it because it was never running right. I ended up putting quite a bit of money into it, including a huge new turbo, which didn't fix the problem.
I'd be happy to help you in any way. I can even call you if you need me to. How does it look? It was pretty shiny when I sold it with the GM clear coat paint job from the previous owner. It also had ZR-1 Corvette rims. The sound system was stolen when it was in the parking lot for transportation! The only thing left was the power amp behind the seat."
Here is a copy of the email I received from Mike Dunn last night in response to my inquiry.
"Holy shit! Are you serious? Which state are you in? I remember selling it to a guy from Louisanna. I bought it from someone in Dallas, Texas. He was a GM parts employee. I purchased it when it had about 93,000 miles on it. He had about 10-12 grand in the motor.
It had Eagle rods and a Lunati cam. Also headers and exhaust. The dude sold it to me with 55 pound injectors but did not have the correct computer chip (or computer program) for those injectors. I brought it to Dynotech in South Jersey. They did a lot of work with Grand Nationals. The owner wasn't there at the time. One of the employees tuned it for me with 21 pounds of boost! It was faster than a Viper even from a roll. It was running great, but the next time I had to bring it to Dynotech, the owner was there. He told me the boost was too high and the injectors were overkill. He sold me stock injectors with a 7th injector kit (I believe the 7th injector is what dented the hood in the center).
After that, it was never running 100%. It was totally on and off. I'm pretty sure the owner from Dynotech kept the one page of my paper work that had the cam specs. I think he didn't know what the hell he was doing, or I was swindled, or a combination of both. I took it to a couple other places but I think that no one knew how to work on it because it was never running right. I ended up putting quite a bit of money into it, including a huge new turbo, which didn't fix the problem.
I'd be happy to help you in any way. I can even call you if you need me to. How does it look? It was pretty shiny when I sold it with the GM clear coat paint job from the previous owner. It also had ZR-1 Corvette rims. The sound system was stolen when it was in the parking lot for transportation! The only thing left was the power amp behind the seat."
terryjmatthew
SY #1770
Re: Newbie check-in w/ Syclone #1770
Is the spacer supposed to be between the throttle body and the plenum? See the pic I attached.
Is the spacer supposed to be between the throttle body and the plenum? See the pic I attached.
Throws
Active member
Re: Newbie check-in w/ Syclone #1770
There's not supposed to be anything between the throttle body and the plenum, just a gasket. I think he's talking about the spacer on top of the TB. The top of the TB is usually just a gasket and a blank(ish) plate.
-P
There's not supposed to be anything between the throttle body and the plenum, just a gasket. I think he's talking about the spacer on top of the TB. The top of the TB is usually just a gasket and a blank(ish) plate.
-P
terryjmatthew
SY #1770
Re: Newbie check-in w/ Syclone #1770
That is what I understand. From everything I am reading here, it was just a bandaid to try to correct an overly lean condition and it didn't work very well. It is also my understanding that at the time (mid 90's) there were not nearly as many fuel injector options available.
That is what I understand. From everything I am reading here, it was just a bandaid to try to correct an overly lean condition and it didn't work very well. It is also my understanding that at the time (mid 90's) there were not nearly as many fuel injector options available.
terryjmatthew
SY #1770
Re: Newbie check-in w/ Syclone #1770
No progress on the engine teardown, but I did pull the computer while its down to try to get an idea of what I am working with.
Any clues? It appears that it may be the ATR Street chip? I found a link earlier today that listed different type chips and the part numbers for them and now I can't find it again.
No progress on the engine teardown, but I did pull the computer while its down to try to get an idea of what I am working with.
Any clues? It appears that it may be the ATR Street chip? I found a link earlier today that listed different type chips and the part numbers for them and now I can't find it again.
Captain Morgan
Moderated User
Re: Newbie check-in w/ Syclone #1770
my guess from the "137" in the number that it is in fact a ATR Pitbull Street Chip.
my guess from the "137" in the number that it is in fact a ATR Pitbull Street Chip.
terryjmatthew
SY #1770
Re: Newbie check-in w/ Syclone #1770
This truck is turning out to be quite the project. Anybody have advice on where to start aside from the obvious engine damage that has yet to be completely diagnosed or repaired?
Here is my list of unknown variables that I can think of off the top of my head.
-Engine repair(head gskt or whatever it happens to be)
-Turbo- No clue what's actually on it
-Injectors- PO says they are stock units
-Seventh injector- Already removed
-Chip
-Fuel pressure regulator
This truck is turning out to be quite the project. Anybody have advice on where to start aside from the obvious engine damage that has yet to be completely diagnosed or repaired?
Here is my list of unknown variables that I can think of off the top of my head.
-Engine repair(head gskt or whatever it happens to be)
-Turbo- No clue what's actually on it
-Injectors- PO says they are stock units
-Seventh injector- Already removed
-Chip
-Fuel pressure regulator
terryjmatthew
SY #1770
Re: Newbie check-in w/ Syclone #1770
How so? The PO says that the injectors in the truck are stock? Any way to verify what the injectors are?
How so? The PO says that the injectors in the truck are stock? Any way to verify what the injectors are?
terryjmatthew
SY #1770
Re: Newbie check-in w/ Syclone #1770
Fuel pressure regulator pic. Stock unit?
*edit* Google says that the stock regulator for the GN is a 280-160-233, so I would assume this one is stock.
Do I need to replace it???
Fuel pressure regulator pic. Stock unit?
*edit* Google says that the stock regulator for the GN is a 280-160-233, so I would assume this one is stock.
Do I need to replace it???
Captain Morgan
Moderated User
Re: Newbie check-in w/ Syclone #1770
Well first, be sure to take a step back once in while, and have a few beers when you do so :rotf:
These trucks can be quite overwhelming, especially when just getting into them. It looks like youre already making lists which is good, just try and tackle one thing at a time.
I'm not sure what your ultimate goals are or your budget or anything else, but if I picked up a truck that had a mystery motor problem, id probably do one of the follow...
- total stock rebuild, stock cam, stock injectors, get wiring sorted out, once its running good, then deal with mods.
- rebuild, but maybe toss in good rods, pistons, rings, stock cam, stock injectors, ect ect...
the main focus is just to get it back to "default mode", that way youre not trying to chase down problems AND tune a truck with a different cam and/or injectors in it, especially as a novice.
Get it running, enjoy it, then you can always swap parts and start modifying.
Well first, be sure to take a step back once in while, and have a few beers when you do so :rotf:
These trucks can be quite overwhelming, especially when just getting into them. It looks like youre already making lists which is good, just try and tackle one thing at a time.
I'm not sure what your ultimate goals are or your budget or anything else, but if I picked up a truck that had a mystery motor problem, id probably do one of the follow...
- total stock rebuild, stock cam, stock injectors, get wiring sorted out, once its running good, then deal with mods.
- rebuild, but maybe toss in good rods, pistons, rings, stock cam, stock injectors, ect ect...
the main focus is just to get it back to "default mode", that way youre not trying to chase down problems AND tune a truck with a different cam and/or injectors in it, especially as a novice.
Get it running, enjoy it, then you can always swap parts and start modifying.
Captain Morgan
Moderated User
Re: Newbie check-in w/ Syclone #1770
Yup!
toss up a picture of your injectors. :tup:
Yup!
toss up a picture of your injectors. :tup:
Jimmy
Banned
Re: Newbie check-in w/ Syclone #1770
well yeah maybe it has stock injectors but IDK. A Sy running 11's in '95 was pretty unheard of.
IMO with just the bigger turbo and stock FPR it had to be starving for fuel. Lean on these engines = BOOM
Thankfully we now have a much greater understanding of what works and what doesn't,
Once you get this thing torn down we can point you in the right direction,but I promise it is not a simple or cheap fix and that motor is done.
well yeah maybe it has stock injectors but IDK. A Sy running 11's in '95 was pretty unheard of.
IMO with just the bigger turbo and stock FPR it had to be starving for fuel. Lean on these engines = BOOM
Thankfully we now have a much greater understanding of what works and what doesn't,
Once you get this thing torn down we can point you in the right direction,but I promise it is not a simple or cheap fix and that motor is done.
terryjmatthew
SY #1770
Re: Newbie check-in w/ Syclone #1770
Injectors
Wastegate
Rockers
What the hell is this thing?
And this?
Injectors
Wastegate
Rockers
What the hell is this thing?
And this?