Car dies after HG swap, timing issue?
08-04-2006, 09:52 PM
#1
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Join Date: Oct 2005
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Car dies after HG swap, timing issue?
I took all my ---- apart, replaced the HG with an oem one, new arp headstuds torqued to 80ft#, oil change, some more new gaskets...
When I started the car when everything was hooked back up it ran REAALLY rough, with what seemed to be backfiring, then died after about 20-30 seconds. I then checked for leaks (none...no fuel leak, coolant all good) and started it up again to drive it into my driveway. It rolled in, died again. I am going to look at it some mopre tonight, but I am fried after 12hrs of work on my day off.
Anyways, is this a timing issue, did I destroy something, or is it a vac problem possibly>?
Really need the car for tommorow, DD project cars ftw. Monday is my final deadl;ine for solving this, tommorow is extremely preffered so I dotn have to bus it to work.
As far as timing, I loosened the adjustment nut, took off the timing belt, took out the cam gears, took off the dizzy, did whatever. Put the dizzy/cams back in, Tried to get the cams to both say UP but they were off by a little. There are up marks, and also two notches that are supposed to match up with a line on the head...if the notches match up, they are not perfectly on the line, and the two UP markings do not match. If the UP marking match then the notches do not. I got it as close as I could (TDC #1 I guess). For the crank, it has III I (theree little cuts and one more after a space...I took these to be the timing marks) and put the little cuts as close to the mark on the middle of the timing belt cover as I could. Not sure if it was perfect, impossible to see in there. Anyways, throw me any ideas or help you have, I want to kill myself as usual.
When I started the car when everything was hooked back up it ran REAALLY rough, with what seemed to be backfiring, then died after about 20-30 seconds. I then checked for leaks (none...no fuel leak, coolant all good) and started it up again to drive it into my driveway. It rolled in, died again. I am going to look at it some mopre tonight, but I am fried after 12hrs of work on my day off.
Anyways, is this a timing issue, did I destroy something, or is it a vac problem possibly>?
Really need the car for tommorow, DD project cars ftw. Monday is my final deadl;ine for solving this, tommorow is extremely preffered so I dotn have to bus it to work.
As far as timing, I loosened the adjustment nut, took off the timing belt, took out the cam gears, took off the dizzy, did whatever. Put the dizzy/cams back in, Tried to get the cams to both say UP but they were off by a little. There are up marks, and also two notches that are supposed to match up with a line on the head...if the notches match up, they are not perfectly on the line, and the two UP markings do not match. If the UP marking match then the notches do not. I got it as close as I could (TDC #1 I guess). For the crank, it has III I (theree little cuts and one more after a space...I took these to be the timing marks) and put the little cuts as close to the mark on the middle of the timing belt cover as I could. Not sure if it was perfect, impossible to see in there. Anyways, throw me any ideas or help you have, I want to kill myself as usual.
08-04-2006, 11:05 PM
#3
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Join Date: Feb 2003
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Re: Car dies after HG swap, timing issue?
Sounds like fucked cam timing.
You want the single crank pulley mark lined up with the timing mark on the lower timing belt cover.
You want both cam gears UP with the marks lined up perfectly with the adjacent gear + ignore where those marks fall on the head.
PS - there is no CompUSA in or near Asheville. Find me some cheap ram or I kill your russian ***.
You want the single crank pulley mark lined up with the timing mark on the lower timing belt cover.
You want both cam gears UP with the marks lined up perfectly with the adjacent gear + ignore where those marks fall on the head.
PS - there is no CompUSA in or near Asheville. Find me some cheap ram or I kill your russian ***.
08-05-2006, 01:21 AM
#5
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Re: Car dies after HG swap, timing issue?
Originally Posted by Joseph Davis
PS - there is no CompUSA in or near Asheville. Find me some cheap ram or I kill your russian ***.
08-05-2006, 10:12 PM
#7
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Re: Car dies after HG swap, timing issue?
Tried what you said, if I alligned the cams with the punch, the up marks would be imperfectly lined up. Is this fine? Does it mean that my cam gears are off? And that it doesnt matter so long as the punch holes line up right? It still ran shitty, but did not die... I guess I got closer this time. I think I lined up the crank with the wrong mark on the cover, really hard to see anything in there. Thank you VERY much for you help! Going to try again before work tommorow.
-edit-
This is being done on a turbocharged car, with a chipped close loop ecu...so if the timing is off a single degree, will it be really messing with my maps and all? Going to get the tuned touched up anyways, but want to be sure its safe to drive once I get it running ok to get to my tuner 1 hour away.
-edit-
This is being done on a turbocharged car, with a chipped close loop ecu...so if the timing is off a single degree, will it be really messing with my maps and all? Going to get the tuned touched up anyways, but want to be sure its safe to drive once I get it running ok to get to my tuner 1 hour away.
08-05-2006, 11:02 PM
#8
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Join Date: Feb 2003
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Re: Car dies after HG swap, timing issue?
Punches? You mean the holes in the cams? I never use those things... they require a stepped shaft to align correctly, and I don't have that ---- in the trailerpark.
Line the marks up... the single 0 degree pulley mark with the index mark on the lower cover, and get the two closest alignment marks di-rectally pointing towards each other with the UPs pointed UP.
If you are a tooth off on a stock car, it can cause hard starts, poor running, shifted powerbands, overheating, etc. With a turbo car be real ------- careful sporto.
Line the marks up... the single 0 degree pulley mark with the index mark on the lower cover, and get the two closest alignment marks di-rectally pointing towards each other with the UPs pointed UP.
If you are a tooth off on a stock car, it can cause hard starts, poor running, shifted powerbands, overheating, etc. With a turbo car be real ------- careful sporto.
08-05-2006, 11:34 PM
#9
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Join Date: Aug 2003
Location: NE-PA
Posts: 4,666
Re: Car dies after HG swap, timing issue?
I just re-did the timing belt on my friend's 92 gsr...idiots that tried to do the belt lined the crank pulley up on the 16# btd mark and had the intake off a tooth as well. A trick I use on dohc motors is first align the cam gears (should be either 2 dots on each pulley or little cuts depending on the gear) with the alignment marks on the back of the timing belt cover (it also aligns the dots/cuts on the gears with each other). Then I advance the exhaust cam one tooth to make up for the slack that is always in the belt when you put it on to that gear. Pull the belt on most of the way, hold it in place, and use a wrench to turn the gear back to where it's supposed to be. Slip the belt on the intake cam, tighten your adjuster, rotate the motor counter-clockwise one time by hand and see where your marks line up. If you did it right, they should still be right where you want them. This seems to be one of the easiest ways to re-do a belt with the motor still in the car. Good luck and keep us updated 
08-06-2006, 08:35 PM
#10
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Re: Car dies after HG swap, timing issue?
Yeay. Did it. Went apeshit with tqing the log mani on and snapped one bolt clean off, another two got in sort of croocked, so its a bit louder and goes pop pop pop under gas, but sounds the same at idle and off throttle. Obivousy spooling like 1.5k later, poo. going to have to fix that. Oh, and I still seem to be loosing coolant, so looks like I have to get a new radiator anyways 
. thanks for all the advice, just have to keep an eye for leaks, fix my manifold leak, and somehw eplace the bolt that snapped off in the head...its the upper right hand side exhuast mani bolt, and it ripped flush with th head..my ---- sounds straight lawnmowerish.
Oh, and that looks really unclear to me, so to clarify: TDC everything, and it started to run good. yeay. At least I'm nearly a timing pro now.
. thanks for all the advice, just have to keep an eye for leaks, fix my manifold leak, and somehw eplace the bolt that snapped off in the head...its the upper right hand side exhuast mani bolt, and it ripped flush with th head..my ---- sounds straight lawnmowerish.Oh, and that looks really unclear to me, so to clarify: TDC everything, and it started to run good. yeay. At least I'm nearly a timing pro now.
