Condition Of Crankshaft

Sirius75

Member +
I need some opinions on if the journals on my crankshaft look ok for my rebuild.....as i know people are not to keen on running crankshafts that have had machine work done on them due to making them weaker and would rather just use another crank but im not sure if mine is alright, anyone give me any opinions?

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dac69er

Super Moderator
doesnt look too bad. how deep are the scores that are in some of the pics? can you feel them with your finger nail?
what condition where the bearings in that came out and how do the journals measure with a micrometer?

if you sand the journals you may as well throw the crank away.

ignore the second half of thestarletgt's post the. first half is correct though, but you already knew that ;)
 

Seanmcn

Member +
If your in doubt bring it to a machine shop... they will tell you... it does no harm to get the journals polished. I think its cheap enough..
 

TheStarletGT

Member +
When you rebuild a engine, you dont fit new bearings on a old crank journals, they get serviced. If required, they get machined to suite, and if their in good condition, they get sanded so the surface is like new. there is a process that gets rid of the old glaze. Sanding/ linishing, same thing.
 

Iain@CRD

Lifer
When you rebuild a engine, you dont fit new bearings on a old crank journals, they get serviced. If required, they get machined to suite, and if their in good condition, they get sanded so the surface is like new. there is a process that gets rid of the old glaze. Sanding/ linishing, same thing.

You need to start learning and stop try to teach. Stop giving shit advice.
 
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Sirius75

Member +
doesnt look too bad. how deep are the scores that are in some of the pics? can you feel them with your finger nail?
what condition where the bearings in that came out and how do the journals measure with a micrometer?

if you sand the journals you may as well throw the crank away.

ignore the second half of thestarletgt's post the. first half is correct though, but you already knew that ;)

A couple of the journals i can feel scores with my fingernail. But there not that deep atall. The bearings looked fine but i do know that they were all replaced not long ago by the previous owner. so could have something to do with it. Cant tell you how they measure cos i dont have a micrometer lol, but im sure my dad can get me one to borrow from where he works
 

sx_turbo

Lifer
looks like you can just get the crank polished and measure the clearances and all should be fine.


but best take to a machine shop and get them to have a look at it
 
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dac69er

Super Moderator
When you rebuild a engine, you dont fit new bearings on a old crank journals, they get serviced. If required, they get machined to suite, and if their in good condition, they get sanded so the surface is like new. there is a process that gets rid of the old glaze. Sanding/ linishing, same thing.

if the journals measure fine and they dont have much marking on the surface then its fine just to fit new bearings.
i dont understand where you get this glazing from??? can you explain what you mean??
 

corofin12345

Member +
A couple of the journals i can feel scores with my fingernail. But there not that deep atall. The bearings looked fine but i do know that they were all replaced not long ago by the previous owner. so could have something to do with it. Cant tell you how they measure cos i dont have a micrometer lol, but im sure my dad can get me one to borrow from where he works

they dont look bad but chances are if you just replace with new bearings it will get worse.. as said, for peace of mind bring it to a place that works on cranks and get a professional opinion
 

Sirius75

Member +
Well went to a place where i thought i could of got it looked at. And they told me that they wouldnt actually do the work themselves, so they told me to go to another place. Only for them to tell me the same thing :/.....But anyway i ended up leaving it with them and there gonna send it off to be looked at and then gonna get a phonecall back later on about it
 

sam_glanz

Member +
When you rebuild a engine, you dont fit new bearings on a old crank journals, they get serviced. If required, they get machined to suite, and if their in good condition, they get sanded so the surface is like new. there is a process that gets rid of the old glaze. Sanding/ linishing, same thing.

Go on forum that might be intrested in reading the bollox you type, About a subject that you quite clearly know little about..


Im with the rest of the lads mate, Them slight score marks don't look to bad, youl get away with a polish on them, Machine shops charge about 40/50 i think, and while its there you can get a second opinion as well... Plus if you havent got corret measuring tool's you could allways use plasti gauge on the journals :)
 

Sirius75

Member +
Go on forum that might be intrested in reading the bollox you type, About a subject that you quite clearly know little about..


Im with the rest of the lads mate, Them slight score marks don't look to bad, youl get away with a polish on them, Machine shops charge about 40/50 i think, and while its there you can get a second opinion as well... Plus if you havent got corret measuring tool's you could allways use plasti gauge on the journals :)

Ah thats good, i recently got given a set of plasti gauges cos as i thought i would need them for checking clearences on the engine and so on.....
So im also guessing if i get told that its gonna be more than a £100 im also being ripped off badly? lol if it does need grinding i guess thats more of the price i'll be looking at to get it done?
 

whiteglanzav

Member +
as said above those journals dont look in too bad shape - if you take it to a machine shop ask them to give it a polish and then order bearings to suit :)
 

Sirius75

Member +
as said above those journals dont look in too bad shape - if you take it to a machine shop ask them to give it a polish and then order bearings to suit :)

Well i took it a a machine shop and they just said that there gonna send it off and get it checked for me......so i just gotta wait for a phonecall

Dont suppose anyone has any rough prices on how much it would cost to get a block decked and cross hatch honed? lol
 

sam_glanz

Member +
Well i took it a a machine shop and they just said that there gonna send it off and get it checked for me......so i just gotta wait for a phonecall

Dont suppose anyone has any rough prices on how much it would cost to get a block decked and cross hatch honed? lol
You might not be getting ripped off mate, could be inspection fee polish +vat, last time I had a block done it was about £48, and hone was £20 or so? But I know the guy, but unsure sure if it was discounted Or you could buy your own tool to do hone the bores.. Not sure of a price though, hope it helps
 

Sirius75

Member +
Just bringing this back up cos i now have an update on my crankshaft

After one week i get a phone call from the company i took it too. Telling me that the big end journals will get away with having just a polish, BUT apparently my main journals need grinding....which i though as much as a couple of them had quite deep scores on them which you could feel with your fingernail.
The price that he told me for the work to be done was £171 + VAT. And he also asked me for the engine code cos all he could get from my reg was EP82 so told him it was for a 4e-fte and he was gonna find out the price of the bearings to suit. So said he would ring me back once he had the total price but didnt get a phonecall back today.....so will probably get the phonecall tomorrow.....so this is gonna be pretty costly im guessing lol
 

TheStarletGT

Member +
Just a quick conclusion, whatever you do, do not ask for any advice or anything to these two members who replied in this thread as they may give you a costly disaster cos remember they said you can do a rebuild and retain the crankshaft in its damaged condition without service, so basically, fit brand new bearings on not optimal journal surfaces.

Iain@CRD
sam_glanz


The two people that dont know a thing about engines, period.


Modorators: You can warn me all you like, fact is, these two members provided severe false advice that will be prooved very costly for anyone. Warn me, ban me, do whatever you want, i dont care, you cant hide from the truth.
 
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