flywheel spinning but motor not cranking

[kp116]

I say either a broken key way or broken crank. Does it turn over fast and smooth or does the engine vibrate really bad when cranking it over?

 

[talondsm24]

turns over fast and smooth. ill get a video of cranking today

 

[kp116]

I would crank it over and try to see if all the pistons are moving through the spark plug holes.

 

[talondsm24]

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a car came by right when i was cranking so thats the excess noise

there is hope! turns out the pistons are moving! now what?

 

[RvlutionMtrsprt]

Now you need to pull your accessory belts off, drivers side motor mount, both timing covers, tear down the timing side of the motor so you can replace the broken keyway (pin that locks the crank sprocket to the crankshaft). Cross your fingers and hope that you didn't bend any valves in the process. While the timing side is apart do a compression/leak down test to see if you bent any valves in the process. If you didn't, put it all back together, if you did pull the head off and fix it. Hey, at least you don't have to pull the trans or crankshaft out

 

[DSM1G90]

What now I'm curious about if there was a broken keyway on the front spindle, wouldn't that entail a crank replacement anyway since that's all constructed as a one piece unit?

How you gonna replace a broken keyway, for if that key, being made of high forged steel sitting in a slot of mild steel, might have torn out some of that groove that it's sitting in to hold the front sprocket?

Unless there is a welding trick that can be done ...

some questions to ask....-DSM

 

[RvlutionMtrsprt]

The keyway is not permanently attached to the crank. You can tap it out and install a new one.

 

[talondsm24]

hell ya im happy about not pulling that tranny again! turns out i found 2 missing teeth in the timing belt on top so im thinking behind the lower timing cover a bunch of teeth came off and couldnt be turned by the crank any longer therefore making the cams not turn

 

[DSM1G90]

oh,oh - hope not any bent valves if your T-belt took a shred like that ....

 

[talondsm24]

i think i got off very lucky and didnt bend any valves but i think im 1 tooth off cause its running like crap and sounds like a subi. well i guess ill take it off and try again

 

[kp116]

Missing teeth on the t-belt ran through my mind because i have seen it before, but I thought you said that the crank pulley ect was also not spinning?

 

[dsm-onster]

^^^I got that impression as well.

You can slightly bend your valves, and it still seam to perform fine. Talk to Kevin (above) about that

 

[talondsm24]

Missing teeth on the t-belt ran through my mind because i have seen it before, but I thought you said that the crank pulley ect was also not spinning?

ya, last time ill have my buddy watch belts as i turn the key. haha he swore they moved. a leakdown test proved i did indeed bend some valves. now im just gonna part the car out and put the money into my honda. my first dsm experience was great, hope to get a 2g for a winter project

 

[kp116]

^^^I got that impression as well.

You can slightly bend your valves, and it still seam to perform fine. Talk to Kenny (above) about that

Fixed it for you.

 

[dsm-onster]

I was on the link forums reading someting from Kiggly. Thus the Kevin slip. Sorry


OP. . . 'part it out to money in a honda'? You have an awd 6bolt. You'll spend 2K building the motor to take less than what the 6bolt right there in your car can and has done. And another 3K in traction components to even match it in the 1/4 mile though it weights umpteen lbs less. No one goes quicker in the 1/4 mile cheaper than a dsm.

Get a jy head, check for flatness, and cracks. And enjoy some nice 14b power without having to feather the pedal and clutch everytime you want to be serious.

 

[talondsm24]

well i really wish i could stick with the dsm but its just not a daily driver and i really like the mix of power but still being able to drive it every day

 

[dsm-onster]

Stop listening to the honda nutswingers who say dsm's break all the time. It jumped timing. It's not like every timing belt car doesn't have that happen. Should have checked the belt first off like you would a honda or toyota or nissan.

Why is it not a daily driver? what are you going to do to it to prevent that from happening? You could put the money in fixing this car and have a good daily driver. If you put just what it takes to fix this car into your honda, how much will you get out of it?

I'm sure you'll put umpteen dollars into the honda and in the process replace all the wear parts; then you'll think its a more reliable car, right?

 

[hhuricane]

I drove mine everyday for about 15 years (with zero break downs and never left me once on the side of road) so "its just not a daily driver" isn't really true. Once I'm done my mods it should be able to go back to daily driver status again. Like every car if the maintenance isn't done when required they all are ticking time bombs.

 

[talondsm24]

well i was a pure dsm person for a while then i realized its just not realistic to daily drive it. no matter what anyone says im done with a dsm as a daily. the reality is, ya dsmers are amazing and can go the quickest for the cheapest but its breaking every other day and i dont even drive it that hard. the honda can take almost any abuse i give it with minimal problems. ya i used to laugh at hondas with exhausts cruisin down the freeway like they were street racers. my plan is still to stick with the dsm's just take a break for a while. im saving my 6 bolt block for sure to slowly build it up in the garage whenever i get bored and eventually pick up a 2g shell cause my 1g was kinda just temporary. it was only half my dream car so ill keep the half that i want (block) and evertually get the 2g shell to complete the dream

I drove mine everyday for about 15 years (with zero break downs and never left me once on the side of road) so "its just not a daily driver" isn't really true. Once I'm done my mods it should be able to go back to daily driver status again. Like every car if the maintenance isn't done when required they all are ticking time bombs.

well i guess i got a bad one then. i couldnt get the damn thing to run for a week without leavin me on the side of the road. im an aspiring auto tech and kept up with mayinance as best i could with the small income i had.

 

[BLINKY619]

to the op..... everyone is going to talk bad about hondas.... its just how it is.... just do what you are comfortable with... to be honest in my experience... i know for a fact that a dsm will be more pricey on parts etc. etc. also i own a honda myself... and im proud of it... breaks down alot less... last time i had to do something to it was a water pump witch was 3 years ago.... even tho you give the same maintenance with a dsm vs a honda... im pretty sure that a honda is alot more simpler engine than a dsm. so alot less pain in the a#$ and alot less money... thats why i daily drive my honda yet i keep the eclipse parked most of the time, even tho i drive the honda more than the dsm... the honda breaks down less and that's driving it everyday, most of the day...!!!! and yes i do give both proper maintenance......!


JUST MY OPINION...!

 

[Achelea]

Hondas, Toyotas, Nissans, DSMs, Chevrolets, Fords, Dodges, BMWs, Mercedes, Ferarri, Porsches, Volvos, Audis, Saleens, Fiats, Pontiacs.

No matter WHAT you drive, they all need maintenance. Anything you skip out on will cause problems later on. Maybe not in your ownership, but down the road it will cause something to go wrong.

The problem is by now, Even the Youngest DSMs are 11 years old. And for the most part, have been owned by some one that was not taught, nor trained how to drive the car properly, nor how to take care of it.

The old lady that never went over 3k rpms in a GSX because it was good in snow. I know it sounds good, but you find out that she ignored the check engine light because she's got a picture of her kitty, and the ECU has been running on closed loop for 5 years. Tires and everything else is good, but a sensor has been bad and the car has been driving funny and she didn't notice because she never got into boost.

The Fast and the Furious Fan that bought the car Paul Walker drove gets it, and does everything he heard in the movie. But forgot to replace a balance shaft belt. So it's fast, then when the motor goes, he says it's a crappy car.

The honda owner who is used to a motor that is held back by exhaust and intake restriction comes over and tries the same stuff and finds it doesn't work as well.

The Domestic owner who thinks V6s are hilarious and 4 bangers are only good for old ladies gets mad because he can't find the push rods in the car.

The kid who did burn outs in his old chevy truck, or FWD burn outs in his honda, toyota, or Chevy gets an AWD and tries drag racing using the same clutch dump technique. He blows his center diff and complains that the car isn't as fun because it takes more work than his prior car.

Or owners who think their high score in Need for speed in drifting or in Forza thinks he can handle a car and tries to race on the streets, or on a track, and finds out that G forces can effect your reaction times, and how the car handles.

Or the kids that think tray sliding is hilarious and holds the e brake and does circles in a parking lot.

Most people don't understand what oversteer and understeer is. They don't get that everything in ANY car is made to work with other parts in a specific manner. Hell, I've met people that didn't know what they had. All they knew is it was red and it made funny noises in the back.

All these types of people have been through these cars, and did what they were familiar with. When people Serious about the cars get a hold of them, we end up playing catch up to fix what was broken. Cars in general operate by their weakest link. When it goes and you fix it, it will find the next weakest link. That's why when we pick up cars we are changing hoses, belts, fluids and such for years, because we are catching up on what is needed. The eager ones go ahead and jump a few steps, and end up quickening the failure of parts.

It just so happens that our cars borrowed parts from high performance vehicles and therefore need a BIT more attention than most normal cars. You don't see Evo owners complaining that their cars are cheap. . We have a LOT of early Evo parts in our cars.

Think about it.

 

[haswesley]

You may also find that you stripped the timing belt teeth around the crankshaft pulley and not the key in the pulley. Either way, you need to put it all back together and check compression to see if valves are bent. Been there, done that more than once. It sucks.

 

[dsm-onster]

Hondas dont break because they don't have the torque or traction to damage anything. Once one starts putting money into the motor enough for it to make substantial power (turbo kit, etc.), one also swaps in the right clutch, traction bars, and automatically goes through all the maintenance since the block has to be rebuilt to tolerate the power.

DSMs make 50-75 more horsepower by just turning up the boost and adding a FMIC. No one does the maintenance because it is too easy just to drive it hard as is with more torque/traction than a honda, or with even MORE power. To previous owner beat the he!! out of it. The owner before that beat the he!! out of it. And because it is simply a more powerful platform, now YOU are going to get the pieces.

 

[Flint911]

so the starter is spinning the flywheel but thats about it, the engine isnt turning over seems like the flywheel isnt even spinning the crank. any thoughts?

Flywheel spins. Crazy i know it bolts to crank but it just spins. On front side i turn crank it turns over motor

 

[doubleclutch]

Does timing side pulley spin with the starter?