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huwwatkins
Site Subscriber
Joined: 10 Jun 2004
Posts: 2317
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Sun Mar 05, 2006 8:12 am |
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Just taken the head off the DTI engine i've got, looks like the muppet who sold it to me took the injectors out so water has gotten in and rusted the surface of a few of the bores, sanded em down slightly, but the surface is slightly uneven. Is there anything I can do here or is it a scrap block?
Cheers
Huw |
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bbracer16valver
Retroholic
Joined: 23 Dec 2005
Posts: 3315
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Sun Mar 05, 2006 8:35 am |
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yea just use wire wool a bit of rust wont kill it i doubt |
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JB
Mr Quoter-vator
Joined: 16 Feb 2004
Posts: 7405
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Sun Mar 05, 2006 10:54 am |
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Dan
Site Subscriber
Joined: 28 Jan 2005
Posts: 3547
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Sun Mar 05, 2006 11:36 am |
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how do you mean un even? as in pitted? |
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bbracer16valver
Retroholic
Joined: 23 Dec 2005
Posts: 3315
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Sun Mar 05, 2006 12:45 pm |
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there shouldnt be any thing wrong with it the rings would clear the rust in seconds, |
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Dan
Site Subscriber
Joined: 28 Jan 2005
Posts: 3547
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Sun Mar 05, 2006 12:55 pm |
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i'd have them clear before turning the engine personally. |
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huwwatkins
Site Subscriber
Joined: 10 Jun 2004
Posts: 2317
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Sun Mar 05, 2006 2:21 pm |
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Dan, i've given it a quick rub over with sand paper, unfortunatley it does look pitted. replacement block time? |
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Dan
Site Subscriber
Joined: 28 Jan 2005
Posts: 3547
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Sun Mar 05, 2006 2:26 pm |
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try getting it rebored, iirc they're not lined engine so you cant get replacement liners, take it to a machine shop and see what they say. |
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huwwatkins
Site Subscriber
Joined: 10 Jun 2004
Posts: 2317
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Sun Mar 05, 2006 3:23 pm |
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No, their not lined, reboring means taking material away, right? So wouldn't that cause a problem with compression? |
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Dan
Site Subscriber
Joined: 28 Jan 2005
Posts: 3547
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Sun Mar 05, 2006 3:37 pm |
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it depends how much they take off. and that depends on how badly/deeply its pitted. |
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Chris H
Forum Moderator
Joined: 02 Mar 2004
Posts: 19978
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Thu Mar 09, 2006 11:21 am |
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honing it is a better idea as it doesn't remove as much material |
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stan
Gay Rights Activist
Joined: 07 Apr 2004
Posts: 1268
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Thu Mar 09, 2006 2:15 pm |
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| bbracer16valver";p="86061 wrote: |
| there shouldnt be any thing wrong with it the rings would clear the rust in seconds, |
but that would fuck the rings mate!
if theres no damage as such, try honing it.
otherwise a rebore and over-size rings are in order |
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huwwatkins
Site Subscriber
Joined: 10 Jun 2004
Posts: 2317
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Sun Mar 19, 2006 2:09 pm |
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Rubbed the bores down with some coarse sandpaper earlier, seems there is onyl very light pitting, honing still the best bet>? |
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MAXIBOY
Newbie
Joined: 10 Mar 2006
Posts: 18
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Sun Mar 19, 2006 2:12 pm |
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honing if its recoverable other wise re bore and new pistons |
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stan
Gay Rights Activist
Joined: 07 Apr 2004
Posts: 1268
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Sun Mar 19, 2006 3:52 pm |
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honing should be a finnishing procedure...not a material removal one. if its scored/pitted it will need re-boring.... |
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Chris H
Forum Moderator
Joined: 02 Mar 2004
Posts: 19978
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Sun Mar 19, 2006 4:01 pm |
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by its very nature honing removes material, thats why you use the hone to take the bore to its final diameter. |
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MAXIBOY
Newbie
Joined: 10 Mar 2006
Posts: 18
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Sun Mar 19, 2006 5:31 pm |
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and honing leaves a slightly ruff cross hatched finish to help new rings bed in |
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