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to avoid crankwalk

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domothegreat18

10+ Year Contributor
90
0
Aug 24, 2009
Napanoch, New_York
i was wondering if anyone knew sum ways to avoid the dreaded crankwalk cause i am about to start the rebuild of my 7 bolt and i do not want to run into that problem in the future. one of my friends told me to get rid of the oil squirters i am not to sure on the idea but if anyone has any info on what to do please let me know thanks
 
I doubt getting rid of the oil squirters would help against crankwalk *scratches head* Getting one of those kiggly girdles would hurt.
 
get a 6 bolt... just to be safe... and you can only get rid of oil squiters if you go with forged pistons... but you have a 93 so a 6 bolt swap would be really easy... why dont you want to go with a 6 bolt?
 
I doubt getting rid of the oil squirters would help against crankwalk *scratches head* Getting one of those kiggly girdles would hurt.

why some chose to get rid of them is to decrease the chance of them breaking or falling off and if that happens you lose all oil pressure
 
.....one of my friends told me to get rid of the oil squirters.....

Slap your friend in the back of the head because he's an idiot :ohdamn:


Crankwalk isn't so much of an issue now a days, most people wont even expierence it and is overrated ;)

Just make sure you or whoever is rebuilding the motor, to properly install/torque/lube everything down correctly

And anyways, its the 2g 7 bolts that are known to crankwalk
 
Crankwalk is directly related to end play, measure your endplay when you pull the motor with the old bearings in, then measure the endplay once again with the new bearings. The limit for endplay I believe is .009", atleast that's what it is for a 6 bolt and should be the same for a 7 bolt. If you have a very minimal amount of endplay I don't think you will have any issues with crankwalk ever. I rebuilt a 6 bolt, have over 3,000 miles on it and I measured the endplay right at the limit, no issues so far.
 
You definetly want to get rid of the oil squirters, they are NOT necessary. For one the oil squirter are fed by the cranks mains, meaning that the oil is being split between the thrust bearing and the oil squirters. Magnus started removing them and has yet to see one walk. Supposedly they are there to cool the pistons, but one real reason is because our cars run rich from the factory. Basically you BETTER get rid of them, another thing you might want to do is ge the bearings graphite coated. Do both and I can guarantee that crankwalk will never be a problem
 
Slap your friend in the back of the head because he's an idiot :ohdamn:


Crankwalk isn't so much of an issue now a days, most people wont even expierence it and is overrated ;)

Just make sure you or whoever is rebuilding the motor, to properly install/torque/lube everything down correctly

And anyways, its the 2g 7 bolts that are known to crankwalk

I don't know how many engines you have built. But, 90% of the 7-bolts i've been in have had a visibly worn thrust surface. No one has ever pinned down exactly what causes the 7-bolt thrust issues. But, it's a design error with the block. Crankwalk is not over rated, and a 6-bolt swap is a good option for many people. Sure "any engine can crankwalk" (right out of the dsm defense bible), but, the truth is that pretty much ALL 7-bolts have a thrust issue. Just because the car doesn't quit running from a smashed crank sensor, or the clutch doesn't stick to the floor, doesn't mean the crank thrust isn't out of spec. The truth of the matter is, if a 7-bolt lives ling enough to die of natural causes 100% of the time it will be the thrust problem killing it.
 
I read somewhere on here (maybe VFAQ) and they were saying about filing down the bearing or something like that to get better oil flow around the bearing. I will check for it, I just read it last night. I will post it when I find it.
 
I don't know how many engines you have built.....

ROFL ive built quite a few engine in my short time.

Although i dont necessarily mess with 7 bolts tooo much, the few that i've put together are still running without crank problems.

Yes crankwalk does happend... duh... but most people, well at least everyone ive known, didnt break there motors because of crankwalk

I personally ran 138k miles on my stock 7 bolt with a 50trim etc. etc... and why did it crap out on me???

Snapped rods, although i do regret not checking the cleranances before i trashed the block
 
:nono:Just dont try to boost to 30+psi on stock internals either.. I wouldnt recommend anything over 20psi on stock, but everyone is different and some have dared to do it.
 
:nono:Just dont try to boost to 30+psi on stock internals either.. I wouldnt recommend anything over 20psi on stock, but everyone is different and some have dared to do it.

I pushed 25psi for a very long time on my stock internal 7 bolt with no problems... its all in the maintenance and tune ;)

Its the 30psi for 2 months that finally snapped my rods :(
 
I pushed 25psi for a very long time on my stock internal 7 bolt with no problems... its all in the maintenance and tune ;)

Its the 30psi for 2 months that finally snapped my rods :(

Like I said, SOME choose to overstep that REALLY FINE LINE to which a stock motor can handle. Sorry to hear about your mishap :ohdamn:
 
i was only thinkin about boostin 15psi i am not going to over due i and have to rebuild it all over but i am going to do sum more research and i am also going to check out the links you guys gave me everyone thanks for the help and i will keep ya updated with the rebuild of my 7 bolt monster :D
 
i was only thinkin about boostin 15psi i am not going to over due i and have to rebuild it all over but i am going to do sum more research and i am also going to check out the links you guys gave me everyone thanks for the help and i will keep ya updated with the rebuild of my 7 bolt monster :D

7 Bolt monster STOCKER? A 7 bolt STROKER would be a MONSTER. :hellyeah:
 
i was wondering if anyone knew sum ways to avoid the dreaded crankwalk cause i am about to start the rebuild of my 7 bolt and i do not want to run into that problem in the future. one of my friends told me to get rid of the oil squirters i am not to sure on the idea but if anyone has any info on what to do please let me know thanks

I believe the cure for crank walk is proper sentences, grammer & punctuation :ohdamn:

Since your new, you need to check out the rules & policies as the above mentioned things as well as searching are all included. If you don't want to put any effort into your thread, then most tend to not put any effort into a reply ;) .

Crankwalk isn't a new topic on these forums, I'm sure a simple search of crankwalk will bring up all kinds of good info on this topic.

1995GSTEclipse said:
Just dont try to boost to 30+psi on stock internals either.. I wouldnt recommend anything over 20psi on stock, but everyone is different and some have dared to do it.

Really? I know there are a tonn of people that would disagree with this, myself included. I have run over 20psi for the last 4 or so years, the last couple summers being 24-26 daily. I have run 30psi at the track without issue. I know plently of other that run high 20's daily & some even low 30's daily on their stock bottom, 7 bolts (& I'm not talking just once or twice, I'm talking years & thousands of miles). Also I'm just commenting on 7 bolts as 6 bolts can handle more.

Its more about your tune, not the, its a 7 bolt so it can only handle 20psi. If you don't know what your doing you can take out a bottom end at 15psi, while another guy who knows what he's doing (& has proper supporting mods) can run twice that boost for miles & miles.
 
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