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Registered
Join Date: Apr 2013
Location: SoCal
Posts: 893
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Mahle cis cylinders? Are these good for use?
These came off the 2.7 77 core motor i got. Have receipts mahle cis piston and cyl. Supposedly 25k miles on them from rebuild (motor was very clean...)
Inside is slightly magnetic All look same Was thinking of doing a mild build on my current motor and use these with some higher compression pistons, recondition the rods, crank, case machined, some head work, and pmo or Weber carbs. For a tbd chassis .... Just a clean and Rehone?     
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01-31-2021, 02:39 PM
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I would rather be driving
Join Date: Apr 2000
Location: Austin, TX
Posts: 9,108
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Look decent. Measure them out and if they pass... Run them.
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Jamie - I can explain it to you. But I can not understand it for you. 71 911T SWT - Sun and Fun Mobile 72 911T project car. "Minne" - A tangy version of tangerine #projectminne classicautowerks.com - EFI conversion parts and suspension setups. IG Classicautowerks |
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01-31-2021, 03:48 PM
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Registered
Join Date: Feb 2004
Location: denver
Posts: 1,147
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Any time you have a used set cylinders you should measure for ovality and taper. You should also check the sealing surface for any damage, if those are in spec then with the Nikasil cylinders you have you can clean them up and reuse. Since you are looking at aftermarket pistons they should be ordered sized to with cylinders you plan to use.
john |
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01-31-2021, 09:08 PM
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Puny Bird
Join Date: Nov 2002
Location: Port Hope (near Toronto) On, Canada
Posts: 4,566
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The top where the ring travel ends feel with your finger, nikasil doesn't make a ridge, it's more of a wave. If it has this wave it for sure needs to be re-plated. I had mine re-plated and sized for my pistons.
Do a search, you can't just hone the cylinders with a regular hone, it has to be a certain type of abrasive (silicon carbide???)
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'74 Porsche 914, 3.0/6 '72 Porsche 914, 1.7, wife's summer DD '67 Bug, 2600cc T4,'67 Bus, 2.0 T1 Not putting miles on your car is like not having sex with your girlfriend, so she'll be more desirable to her next boyfriend. |
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02-01-2021, 06:30 AM
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Registered
Join Date: Dec 2014
Posts: 13,867
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Don’t hone them with anything except a red scotchbrite pad and some soapy water.
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02-01-2021, 11:48 AM
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