timeing belt went

i think and if so i am guessing that the 4g63's are interference motors right and if so what are the chances of my head being ok as in valves it happened tonight and i havent started to take it apart

What RPM was the car at when it happened?

You won't be able to tell until you replace the belt and turn by hand. I hada Neon with an interference that the timing belt shredded cruising at 60 (Which should be around 3K RPM if I'm not mistaken) and it didn't bend a single valve. But I've heard of people bending every valve possible. When you go to do the belt turn the cam at LEAST a full revolution by hand and see if ALL the valves come ALL the way up. That's the only way you'll be able to be 100% sure. It'll require a valve cover gasket replacement but I'm guessing it was probably time for that anyways if the belt hasn't been done I'm doubting that gasket was done either.

i was gettin on it till after second went to 3rd then went to 4th about 3000 mabey a little lower and i just went out and i dunno if it makes a diff but both timing marks were at tdc one the front one was a little to the front but like 2 or 3 teeth

Test it anyways I'm telling you. you'll have to rotate both the crank and the cam to go the full revolutions but this isn't something you want to find out when the car's running so it can do MORE damage

there is no way though. .. Those valves had to hit. at least some of them. do yourself the favor and dont waiste the time putting the belt all the way on just to take it off again

Take the head off and check it out.

I have a friend that has a 2g GST... and he had a bad set of cam gears that was causing him to break timing belts every couple months and he never bent one valve out of like 5 timing belt breaks lol.

quote:

ORIGINAL: Sebba

Take the head off and check it out.

I have a friend that has a 2g GST... and he had a bad set of cam gears that was causing him to break timing belts every couple months and he never bent one valve out of like 5 timing belt breaks lol.

depends how it breaks though a slip well that is obvious. a stretch that too. buy shreaded on my Eclipse and destoyd the head if it snaps clean you have a chance and RPMs make a difference to

Like I said that Neon everyone told me had an interference engine and it's been a daily driver for over 5 months now with NO problems whatsoever. The easiest way to check the valves without taking the head off is rotating the cam like I said. Check and make sure NONE of the valves come off their lifter at all (Check clearances).

I would bet they are hit. DSM's dont like timing to be off skipped or snapped. the thing I would be more worried about is not the valves but making sure you didnt crack a piston from vavles hitting.

im pretty sure you must have hit some valves. On my talon i only skipped a couple teeth and i had to replace 8 valves

i am just gonna rebuild the whole motor set it up for turbo and hopfully have it done by spring safley runnin about 20 ta 22 psi every day and get a new tranny while i am at it

That'll work too.

so wait you have a non-turbo 4g63? Theres alot of building up to do if thats the case. And bent valves is not that big of a deal to fix

i have a spare head ill sell you.

how much

i know it involves alot of building up i was planin on pickin up a turboed block i dont know yet

250+ shipping. just needs to be cleaned. it came off a running car. price is negotiable.

quote:

ORIGINAL: red93gs

i know it involves alot of building up i was planin on pickin up a turboed block i dont know yet

There is NO difference from a turbo to an N/A block. If you're building up for a turbo the block will be the same either way. The difference will be the internals, the ECU, and the supporting systems. And if I'm not mistaken, the internals (Pistons/rods, cams, crank, and I think even the valves) were the EXACT SAME for both engines (Actually I think the valves might have been different butt he rest the same). So save the $ and get your block pulled and honed and just rebuild it.

the turbo ones have oil squirters installed to shoot oil at the pistons if i am not mistaken.

quote:

ORIGINAL: Sanguinius

quote:

ORIGINAL: red93gs

i know it involves alot of building up i was planin on pickin up a turboed block i dont know yet

There is NO difference from a turbo to an N/A block. If you're building up for a turbo the block will be the same either way. The difference will be the internals, the ECU, and the supporting systems. And if I'm not mistaken, the internals (Pistons/rods, cams, crank, and I think even the valves) were the EXACT SAME for both engines (Actually I think the valves might have been different butt he rest the same). So save the $ and get your block pulled and honed and just rebuild it.

the pistons have got to be different the rods maybe not but NA needs higher compression than FI I would guess the NA pistons are far from the same

^^^ sounds right to me.

quote:

ORIGINAL: 93eclipsegsx

250+ shipping. just needs to be cleaned. it came off a running car. price is negotiable.

also i have the 6 bolt block to go along with this head .
200+shipping (but i would perfer pick-up)

and i agree with mike about the pistons. He is correct the compression of the pistons is WAY different. I think the 1g;s are around 7.8:1 while the NT is around 9.0:1

and also woody is right that the 1g's have the oil squirters under the pistons

quote:

ORIGINAL: TheEngineer
and also woody is right that the 1g's have the oil squirters under the pistons

thanks john for clarifying my post, wasnt for 100% sure.