Car runs like crap, spits, sputters etc! HELP

IHateHacks · 05-15-2007, 01:34 AM

Theres no way the #1 piston was at bottom dead center when the crank pulley notch lined up with the 0 degree mark on the lower timing belt cover. Everytime the 0 degree mark lines up with the notch on the crank pulley, the #1 piston is on TDC. Its mechanically impossible for the piston to not be at TDC when the notch lines up. The crankshaft is keyed with the crank pulley so that it lines up with the 0 mark everytime the #1 piston is at TDC. Which TDC is another story, but I already went over this with you. Bottom line, when the crank pulley notch lines up with the 0 degree mark and the cam gear matchmarks line up with the notches in the inner timing belt cover, you are on TDC of the compression stroke and you can install the CPS as described in the TSRM. If the crank pulley notch lines up with the 0 degree mark and the cam gear matchmarks are 180 degrees to the notches in the inner timing belt cover then you are on TDC on the exhaust stroke. The #1 piston is at TDC everytime the crank pulley notch lines up with the 0 degree mark.

supradaddy0803 · 05-15-2007, 05:33 AM

What I was getting at is there is 2 TDC combustion and exhaust it is basic mechanics. so it is possible for it to lined up at TDC on the exhaust stroke the piston has to be up to remove the exhaust. But as I said it was worth a try it fixed my 86.5 N/A but like I told him I wasnt sure about a turbo. Because if you line up the 0 and the distributor is not lined up with the number 1 point then you are at the exhaust stroke. But seeing as the 7MGTE doesnt have a distributor I figured why not try it.

05-15-2007, 05:33 AM	#2
supradaddy0803 12psi boost Join Date: May 2006 Location: Athens, TX Posts: 308	What I was getting at is there is 2 TDC combustion and exhaust it is basic mechanics. so it is possible for it to lined up at TDC on the exhaust stroke the piston has to be up to remove the exhaust. But as I said it was worth a try it fixed my 86.5 N/A but like I told him I wasnt sure about a turbo. Because if you line up the 0 and the distributor is not lined up with the number 1 point then you are at the exhaust stroke. But seeing as the 7MGTE doesnt have a distributor I figured why not try it. __________________ 1987 supra NA 5 speed 1JZGTE swap Tokico Illumina 2 and Eibach springs Tokico pillow blocks Suspension Techniques front and rear sway bar HKS super dragger cat-back exhaust plus test pipe Greddy Profec B spec 2 boost controller HKS type 1 turbo timer Supra sport solid steel drive shaft Walboro 255 fuel pump JZA70 Front end mod 18" Volk Racing AV3 18x8.5 front 18x9.5 rear

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05-15-2007, 01:34 AM	#1
IHateHacks 20psi boost Join Date: May 2006 Location: New Haven/Hamden Posts: 793	Theres no way the #1 piston was at bottom dead center when the crank pulley notch lined up with the 0 degree mark on the lower timing belt cover. Everytime the 0 degree mark lines up with the notch on the crank pulley, the #1 piston is on TDC. Its mechanically impossible for the piston to not be at TDC when the notch lines up. The crankshaft is keyed with the crank pulley so that it lines up with the 0 mark everytime the #1 piston is at TDC. Which TDC is another story, but I already went over this with you. Bottom line, when the crank pulley notch lines up with the 0 degree mark and the cam gear matchmarks line up with the notches in the inner timing belt cover, you are on TDC of the compression stroke and you can install the CPS as described in the TSRM. If the crank pulley notch lines up with the 0 degree mark and the cam gear matchmarks are 180 degrees to the notches in the inner timing belt cover then you are on TDC on the exhaust stroke. The #1 piston is at TDC *everytime* the crank pulley notch lines up with the 0 degree mark.