cam positioning question

NoubY · 10-15-2007, 08:13 PM

wuts up, i have a situation id like to ask your help with, the name is Jay and id apretiate anything you can tell me. ok so heres my issue, i have an 87 mr2 with a dual overhead engine (not sure of the code, but i can look into it if its necesary) i was doing the timing belt on it and when taking it apart i did not mark my cam sprockets, i ended up finishing it all and reassembling with what i thot would be the right way, as you can imagine it wasnt, i ended up bending all the valves wich really sux, i took it all apart, changed the valves and now am at a stand still... so my question to you is, how does it line up? it has the 3 slots on either cam and its really pissing me off now, i need this out, so any help would be great, thx

Jay

AustinTxMR2 · 10-15-2007, 11:37 PM

Jay, Sorry to hear about the engine damage. I didn't think it was possible to bend the valves since it is a non interference engine. Has your engine head been shaved or do you have non stock pistons?

Anyhow, here is a picture of the top 2 sprockets and the slight indention that is the mark on the outer edge of the sprockets. The steel cover behind the sprockets have a small dimple that you must line the indentions to.

This is the alignment for the crank.

Note: If the head has been excessively shaved, your belt may be too long and proper time can't be made.

Good luck, John

NoubY · 10-17-2007, 12:11 PM

thx man, this should help

AustinTxMR2 · 10-21-2007, 02:27 AM

Quote:

Originally Posted by NoubY

thx man, this should help

Go here and check out these 4AGE timing belt replacement instructions:

4A-GE timing belt

10-15-2007, 08:13 PM	#1 (permalink)
NoubY No Skills Join Date: Oct 2007 Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	cam positioning question wuts up, i have a situation id like to ask your help with, the name is Jay and id apretiate anything you can tell me. ok so heres my issue, i have an 87 mr2 with a dual overhead engine (not sure of the code, but i can look into it if its necesary) i was doing the timing belt on it and when taking it apart i did not mark my cam sprockets, i ended up finishing it all and reassembling with what i thot would be the right way, as you can imagine it wasnt, i ended up bending all the valves wich really sux, i took it all apart, changed the valves and now am at a stand still... so my question to you is, how does it line up? it has the 3 slots on either cam and its really pissing me off now, i need this out, so any help would be great, thx Jay

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10-15-2007, 11:37 PM	#2 (permalink)
AustinTxMR2 Ludicrous Skills Join Date: Apr 2006 Location: Austin, TX Posts: 71 Thanks: 1 Thanked 5 Times in 5 Posts iTrader Rating: (0/0% )	Jay, Sorry to hear about the engine damage. I didn't think it was possible to bend the valves since it is a non interference engine. Has your engine head been shaved or do you have non stock pistons? Anyhow, here is a picture of the top 2 sprockets and the slight indention that is the mark on the outer edge of the sprockets. The steel cover behind the sprockets have a small dimple that you must line the indentions to. This is the alignment for the crank. Note: If the head has been excessively shaved, your belt may be too long and proper time can't be made. Good luck, John

10-17-2007, 12:11 PM	#3 (permalink)
NoubY No Skills Join Date: Oct 2007 Posts: 4 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	thx man, this should help