Powertechn2
Member
- Joined
- Feb 3, 2014
As it states, I am a new guy here, Oakland county, Mi.
Bought an 87 GN, needs work, kinda rough. It had gone a resto years and years ago.
Doesn't run right, not sure if it really ever ran 100% 10 years ago or not. It spent time in a barn, then eventually just sitting in the yard.
I may ask a lot of question, I may need a lot of answers and guidance.
Eventually I hope to get it right and make the car street capable and enjoyable.
So, now for the info. I wasn't aware this forum saves data as you add it, that is nice. Not much is worse than typing a lengthy post only to have the server time-out and you lose everything.
Anyways. Car has 140xxx on odo (43k showing, I can only assume 143...) has what I have read is a Terry Houston down pipe, was only told that the downpipe is badass and was made by a guy who went to jail for... Has a precision turbo, think 66mm, not 100% on that, yet. 60 something lb/hr injectors, has a chip, also in question as to which chip, intake pipe with K&N conical filter (needs replacing, been cleaned wrong at one point) also lt1 maf. Does have hot wire fuel pump mod, think the pump itself was also upgraded. Heads are ported and polished oem heads, exhaust is not stock, not sure exactly what was changed. Front mount intercooler... Ran low 12's to 12 even back before it was parked and forgotten about. Has a scanmaster which the wires were pulled out below dash, so no connection. Broken glass front bumper, bags in the rear springs... Did I mention it spend most of the last 6-7 years sitting outside, in Michigan?
I know the engine was rebuilt around what would have been the 20-35k on odo mark, like I say, 120-135k ish.
I did manage to drive it home, in January, roads were dry, clean. was all over the place without sway bars and with one torn off air bag hose in the rear, low tire pressure, nice dry rotted front tires, and 28x12.5 ET streets, all at varying degrees of way too low pressure, made a few heads turn with the exhaust dump wide open (was told the plate was in the back floor area lol).
L.e.d. tach in cluster is stuck at around 4k rpm, not sure where it gets its reading from. Runs excessively rich when not under boost, also was told that when at wot and you let off it pops and smokes black (excessively rich also) runs like the injectors are staying open too long. You start it and all you can smell is unburnt fuel, it will load up badly. Was supposed to buy this car about 2.5 years ago, went on vacation and another buddy bought it out from under me for more money. Bought it now for less money now, but has rust holes in both rear quarters in front of tires now. Wasn't this way, but I can only imagine the cancer had already set in and was just chomping away. Almost seems like the ecu thinks the car is at 4k all the time. Not sure at this point. Only had 1-2 seconds under 1/2 to 3/4 throttle on the way home just to see if it cleared up. Ran strong under those minute circumstances, but didn't wanna chance hurting it with the scanmaster inop, also not knowing what kind of fuel is in it. Smells like a blend of 110 torco and unleaded. I am sure someone on here helped the pre-previous owner build this car as I have known him for many years and he said he met many people who helped him along the way thru the GN community.
I may ramble on at times. I would rather give too much info than not enough.
Nice to be here. Already found info and questions which I need to find the answers to.
Bought an 87 GN, needs work, kinda rough. It had gone a resto years and years ago.
Doesn't run right, not sure if it really ever ran 100% 10 years ago or not. It spent time in a barn, then eventually just sitting in the yard.
I may ask a lot of question, I may need a lot of answers and guidance.
Eventually I hope to get it right and make the car street capable and enjoyable.
So, now for the info. I wasn't aware this forum saves data as you add it, that is nice. Not much is worse than typing a lengthy post only to have the server time-out and you lose everything.
Anyways. Car has 140xxx on odo (43k showing, I can only assume 143...) has what I have read is a Terry Houston down pipe, was only told that the downpipe is badass and was made by a guy who went to jail for... Has a precision turbo, think 66mm, not 100% on that, yet. 60 something lb/hr injectors, has a chip, also in question as to which chip, intake pipe with K&N conical filter (needs replacing, been cleaned wrong at one point) also lt1 maf. Does have hot wire fuel pump mod, think the pump itself was also upgraded. Heads are ported and polished oem heads, exhaust is not stock, not sure exactly what was changed. Front mount intercooler... Ran low 12's to 12 even back before it was parked and forgotten about. Has a scanmaster which the wires were pulled out below dash, so no connection. Broken glass front bumper, bags in the rear springs... Did I mention it spend most of the last 6-7 years sitting outside, in Michigan?
I know the engine was rebuilt around what would have been the 20-35k on odo mark, like I say, 120-135k ish.
I did manage to drive it home, in January, roads were dry, clean. was all over the place without sway bars and with one torn off air bag hose in the rear, low tire pressure, nice dry rotted front tires, and 28x12.5 ET streets, all at varying degrees of way too low pressure, made a few heads turn with the exhaust dump wide open (was told the plate was in the back floor area lol).
L.e.d. tach in cluster is stuck at around 4k rpm, not sure where it gets its reading from. Runs excessively rich when not under boost, also was told that when at wot and you let off it pops and smokes black (excessively rich also) runs like the injectors are staying open too long. You start it and all you can smell is unburnt fuel, it will load up badly. Was supposed to buy this car about 2.5 years ago, went on vacation and another buddy bought it out from under me for more money. Bought it now for less money now, but has rust holes in both rear quarters in front of tires now. Wasn't this way, but I can only imagine the cancer had already set in and was just chomping away. Almost seems like the ecu thinks the car is at 4k all the time. Not sure at this point. Only had 1-2 seconds under 1/2 to 3/4 throttle on the way home just to see if it cleared up. Ran strong under those minute circumstances, but didn't wanna chance hurting it with the scanmaster inop, also not knowing what kind of fuel is in it. Smells like a blend of 110 torco and unleaded. I am sure someone on here helped the pre-previous owner build this car as I have known him for many years and he said he met many people who helped him along the way thru the GN community.
I may ramble on at times. I would rather give too much info than not enough.
Nice to be here. Already found info and questions which I need to find the answers to.
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