timing belt broke while drivin, chance of bent valves?

[jlgeclipsegsx]

Ok I was driving down the road going 30 mph barely pushing the gas and all of a sudden my timing belt broke and I shut the car off imediately. Did I mess anything up?

 

[doggietom]

i would just pull the head off and look first, chances are you didn't hurt the pistons too bad. Have the head fixed, and boost it!

 

[NOSLO2PT0]

1. I drove to indiana- Go ahead look up my spun bearing story, I had a $200 rebuilt 6 bolt in 3 days later .
2. Drove to wisconsin-Traded to a rockford DSM'r, for some blocks and heads.
3. Dixon IL- Traded for rebuilt 30k 7 bolt NA with nice internals from Brownfinger, a member on here.

1. You found a really good deal. Did the guy have papers to prove the rebuild?
2. Did you trade for a complete rebuilt motor?
3. What exactly are "nice internals"? And Why put an N/A block into a turbo car? Did you make provisions for the lack of a knock sensor on the N/A block?

 

[jlgeclipsegsx]

So do these look bad?

dont mind the scratches, i was trying to clean them up a bit

 

[g4ebguy90]

I would say those pistons are junk... take some pics of the walls of the block.

1. You found a really good deal. Did the guy have papers to prove the rebuild?
2. Did you trade for a complete rebuilt motor?
3. What exactly are "nice internals"? And Why put an N/A block into a turbo car? Did you make provisions for the lack of a knock sensor on the N/A block?

1. The indiana engine. The oil pan was pulled and the head was inspected. The internals were PURE silver. Very clean, you could tell it had all new internals in it, including 2g pistons on 1g big rods. Not to mention I swapped my head on to it, because my head had the turbo attached still, the pistons where in perfect condition and it also had ARP headstuds .

2. I took the complete engine from wisconsin, traded it for a complete short block, a bare 7 bolt block, a head with bent valves, 450cc injectors, and a nice 14b turbo. I sold the turbo alone for what I paid for the wisconsin engine. .

3. I used the engine from Dixon,IL for trade as it was just a shortblock and head. I have a NA talon, I put the NA with nice internals in that. The head was in perfect condition. The engine also had paperwork, that seemed to go right along with what was done to it. Id say it had 20-30k on it. The NA engine was a COMPLETE Engine, minus throttle body and maybe 1 or 2 other things. When I say nice internals I mean new/ in good condition.

The reason the indiana engine was so cheap, was because, the guy that had the engine, actually bought the whole car off his friend, His friend was in a tight spot so he didn't take much for it, and didn't even get ot drive the car. So the guy really just sold the turbo and intercooler it had, and just wanted 200 for the engine, he didn;t care as he was a STI guy. He would rather drive his impreza or whatever it was.

 

[jlgeclipsegsx]

Well they are stock

 

[g4ebguy90]

BTW someone please make a comment on this, does the cyl's appear to not have the hone in the middle where it looks very dark?

You can plainly see where a valve nicked the relief in the piston.

 

[muddfisher85]

Pistons look fine mine have bent valves 3 times and still work fine. Get us pictures of each one up close to check for cracks. I personally have given up on 7 bolt motors the last 3 I had took a crap on me but I will say this I didnt put the engines together myself ended up being the down fall of all 3 but the ebay bearings sure didnt help. I just buy a good running 6 bolt 1g where I live for anywhere from 400-900 all day long and take the engine for me and part out the rest for the guys on tuners. Most of the time the 6 bolt engine ends up costing me nothing after the part out.

 

[jlgeclipsegsx]

I am not at home at the moment but a friend and I already checked for cracks, I was just worried about where the valves hit the piston. This is my first build so I want to stick with what I have but If it takes a crap on me, I will already have a 6 bolt ready to go. I was also concerned about those dark spots

 

[hypergenesis]

Because $2-300 rebuilt motors are EVERYWHERE!!!! Dumbest advice i've ever heard! Take the $300, go get the head rebuilt, spend another $180 on an ebay timing belt kit, slap the car back together, and call it a day!

why not just go get maperformances timing belt kit for 200$ or so and be safe at mind about things failing on you? I honestly would never use an ebay timing belt kit its like buying an ebay built engine.

 

[muddfisher85]

How many miles were on the engine? And my pistons had bigger nicks then that and still work fine.

 

[jlgeclipsegsx]

Funny you say that because I have that on my list to buy from ma.

just hit 100,000

 

[g4ebguy90]

If your just going to throw on a head. Just file down where it nicked the valve reliefs in the pistons and be on your way. Personally I would never run them. Turbo Pistons are pretty tough on the top. I would be more worried about the sides and ring lands being cracked. But I think they are fine. If they did have side cracks, I would be amazed.

 

[muddfisher85]

I would say your fine just get a non ebay timing kit and a good head gasket. If you need a head I have one in great shape im really tired of looking at . I would say if your trying to go cheap for right now while you build a 6 bolt as you have the money just file down the nicks as already stated and put a good head and headgasket on it and reaplce the timing stuff and let the old 7 bolt run as long as it can. At worst case your out a head gasket and 7 bolt timing tensioner the rest you can use on a 6 bolt

 

[jlgeclipsegsx]

Yeah, that's what i planned, its my dd but if it wasnt, I would pull the whole engine and do a rebuild.

Well unless you have aftermarket parts in your head then yes Im interested. I was going to take my to a trusted machine shop and buy aftermarket parts for it. by the way I am going to put a couple pics up of my lifters and cams. I dont know if its suppose to be this way but out of all the lifters, three of them dont touch the cams and they wiggle.

here are the pics

There are so many things you can do. It would be smart just to do what you said, I just want to be smart when I do my first build, its hard when I have to work and school and winters coming up and its my daily driver.

 

[muddfisher85]

The head I have is stock off a 95 gsx it still has the cams and everything in it even the 95 cam sensor and cam gears with only 104k on it. Ill sell you for cheap just pm me I can send you some pictures. Are those nicks in the cams too? They are sitting like that cause of the bent valves

 

[jlgeclipsegsx]

yeah, you should send me some pics of it.

 

[muddfisher85]

Whats your email I have yet to figure out how to insert pictures on here from my cell

 

[jlgeclipsegsx]

just send it to my phone 218 329 4862

 

[hypergenesis]

Funny you say that because I have that on my list to buy from ma.

just hit 100,000

Its worth it and you can get the Balance shaft delete kit while your in there as well. Im about to do that for my timing belt and what not

 

[muddfisher85]

Cool Im at work till 9 and the head is at my house in my room so ill get you pictures then cool? I also have a set of 7 bolt arp head studs I will sell you for cheap only torqued once and had 20 miles on them. I would recomend replacing the stock small ones just for sake of mind.

 

[jlgeclipsegsx]

Yeah, I plan on buying timing belt kit with water pump and bs elimination kit. But i was wondering if you can look at the pics that i put up of my lifters and cams. it that bad ?

Ok i will be looking forward to seeing the pics

 

[NOSLO2PT0]

The reason the rockers don't touch the cams is because those valves are bent!

 

[jlgeclipsegsx]

oh yeah stupid me, I just noticed somebody already said that ha.

 

[muddfisher85]

Ok lost my cell phone last night and I keep trying to send you pictures of it on my buddies old ass phone but keeps saying invaild destination?

 

[gieri002]

Those pistons are just fine, just shave any sharp parts to prevent hot spots(causes detonation) and run them. Search these threads a bit more, I have seen much more extreme cases turn out to be okay.