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1G G4CS Timing with AEM Tru Time

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93xsg

10+ Year Contributor
245
55
Jul 3, 2011
Sequim, Washington
Alright guys,

Just timed my G4CS last night. It was late so I didn't even turn it over.

I am using AEM Tru Time gears with the 4g64 OEM belt. Everything else is 6 bolt OEM Timing.

Sooo the previous owner of the cam gears marked them. Looks like half tooth each side.

So what I did is set the cam gears to 0 and hooked up the cam holding tool, set to the new timing marks.

Haven't turned the motor yet, but my method for tensioning, was leave grenade pin in, tighten eccentric bolt until pin moves freely. Correct?

How's it look? (I know oil pump is like half a tooth off but no balance shafts)

Also...does it matter which way the crank gear goes on?? One side seams perfectly flat, I put that side in towards the plate. (Balance shaft gear fat side in, trigger plate matching bevels of first gear, then crank gear flat side in)

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We can't tell by this pic.

Because the cam gear lock tool that you are using is dedicated for 4g63. This lock tool doesn't fit if you want to set the timing marks on the cam gear as 4g64. Which mean if you use this cam gear lock tool on a 4g64/G4CS, the crank plate timing mark will be always 7.5 degree off either advance or retard. When you set the timing, you have to set the crank timing mark first, and that mark will have to be locked always in the same position which means cylinder #1 and #4 at TDC. And please keep in mind that you are still in the middle of process, you still have to change the valve timing.

Please refer the link below. I have uploaded some pics how to set the adjustable cam gears for DOHC 4g64, just pick one combination from the pics I uploaded in the link and set the degree and mark them like that, and then install the timing belt.
 
We can't tell by this pic.

Because the cam gear lock tool that you are using is dedicated for 4g63. This lock tool doesn't fit if you want to set the timing marks on the cam gear as 4g64. Which mean if you use this cam gear lock tool on a 4g64/G4CS, the crank plate timing mark will be always 7.5 degree off either advance or retard. When you set the timing, you have to set the crank timing mark first, and that mark will have to be locked always in the same position which means cylinder #1 and #4 at TDC. And please keep in mind that you are still in the middle of process, you still have to change the valve timing.

Please refer the link below. I have uploaded some pics how to set the adjustable cam gears for DOHC 4g64, just pick one combination from the pics I uploaded in the link and set the degree and mark them like that, and then install the timing belt.


Totally get it! I didn't take a good picture it was late and the motors at my buddies house I was trying to let him go to bed 🤣

I'll pop that cam gear tool off and get a better pic. I was about to set each cam gear 3.5° off like I usually see here, but then noticed a previous owner had marked the gears. So I just put those in the middle of the tool.

Thanks for the forum post, I knew I wasn't done 100% with timing, felt like it was a good time to get some reassurance :) I've done the normal 4g63 before.

**Which one of the 3 options do I pick? Does it matter??? Wasn't too clear on post

I did verify 1 and 4 were at TDC and that my trigger plate was on correct while at TDC.

Thanks again
 
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