Author Topic: cylinder wall rust  (Read 856 times)

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Offline jviolette

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cylinder wall rust
« on: May 14, 2020, 07:10:11 pm »
new here so if this post is in the wrong area i apologize, just got deal on a 1975 360 engine for my project. engine wouldn't budge with a big bar on the balancer but the price was so cheap couldn't say no. got the heads off and took some photos. plan is to do a stroker crank with a .030" over bore to make a 408. just wondering how much cylinder wall rust is too much? my plan was to knock the pistons out the bottom and use a ball style hone to clean the rust off to get a good cylinder bore measurement before paying a machine shop to tell me its junk because it already been bored out(unknown history on engine) gas engine building is kinda new to me as i am a diesel tec so not sure if this worth the effort to get torn down or not. thank in advance for any input.

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    Offline ToxicDoc

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    Re: cylinder wall rust
    « Reply #1 on: May 14, 2020, 07:23:47 pm »
    You won't know until you clean up the bore and can measure it.
    '85 W150 SB, 408 stroker, Magnum manifolds, Performer RPM, 670 Truck Avenger, HEI ignition, Auburn LSD 9.25 and '82 D44 (non-CAD) with 3.55/3.54,  NV4500/NP241

    Offline jviolette

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    Re: cylinder wall rust
    « Reply #2 on: May 14, 2020, 07:46:01 pm »
    Ok. I'm so used to engines with liners that I've never really had to deal with a situation like this. Ill get it torn down fully this weeknd and get a measurement. Hoping i can use the block 🤞

    Offline Chilly

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    Re: cylinder wall rust
    « Reply #3 on: May 14, 2020, 08:28:02 pm »
    Could sleeve the stanky bores.  Or all of the bores. 
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    Offline jviolette

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    Re: cylinder wall rust
    « Reply #4 on: May 14, 2020, 09:23:27 pm »
    Didn't even know that was a thing on these engines. I got this complete carb to oil pan engine bolted to a 727 trans suposidly out of a camper for $20 off of craigslist,  guy wanted $300 but when it would turn over i jokingly said ill give ya 20 bucks for it and amd laughed he said ok. So if i can get away a clean up on my end and a .030" over bore for the stroker kit to make a 408 ill be golden 8)

    Offline SuperBurban

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    Re: cylinder wall rust
    « Reply #5 on: May 14, 2020, 10:23:48 pm »
    Wire brush it, spray it with a cleaner, and wipe it down, that will give you a better view of what you have. A .030" overbore, is only .015" each side, which is not much at all.
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    Offline dodge82273

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    Re: cylinder wall rust
    « Reply #6 on: May 15, 2020, 01:05:46 am »
    gas/diesel same principals , apply to a diesel re-ring ..... unless that is no longer done on diesels .... and we now just change parts .... slugs and jugs .... 15 tho ain't much how big are new slugs available in ? you may have to go bigger .... clean it up enough to gauge bores , if "stock" there's no way to KNOW without boring it how deep the pits are is there ?
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    Offline Elwenil

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    Re: cylinder wall rust
    « Reply #7 on: May 15, 2020, 06:10:23 am »
    Putting sleeves in a V8 is possible, but typically not worth it since it will cost way more than another core block.  It can also lead to other issues, so it's not usually done unless you have something super rare and old, like 1910s 1 of 5 sort of deal.
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    Offline jviolette

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    Re: cylinder wall rust
    « Reply #8 on: May 15, 2020, 07:14:53 am »
     Im only into this engine for $20 and my time, so if its been punched before or the rust has created deep pits ill move on. Plan to get it somewhat cleaned up tonight and ill post an update on my measurements,thanks for the replys!

    Offline jviolette

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    Re: cylinder wall rust
    « Reply #9 on: May 16, 2020, 10:40:01 am »
    got 4 out of 8 pistons out last night, was NOT prepared for how much work that was going to be :o was able to grab some cylinder measurements this morning and it looks like i can save my $20 360!!! the other 4 pistons are soaking now and will go at it again later today to see if i can get em to budge.

    Offline Mojack

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    Re: cylinder wall rust
    « Reply #10 on: May 16, 2020, 11:57:56 am »
    there's no way to KNOW without boring it how deep the pits are is there ?


    Looks good so far, but like dodge82273 said ^
    Have your machine shop start with the worst bore.
    1979 Trailduster 0 cubic inches, awaiting a 440, a crusty work in progress.

     

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