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Old 03-18-2006, 06:56 PM
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what tests on engine prior to removal/rebuilding

I am planning to 'freshen up' the 305 engine in my '29 highboy in the next couple of weeks now that I have the tripower all installed and running A OK. I wanted to do them one at a time to prevent running into trouble with a rebuilt engine AND new intake system. This way I can better pinpoint the offending item!

Anyway, my plan is to remove the engine, give it some checks before a scrub and paint job as it is so on display.

If I had better planned the tripower installation it wouldn't have taken me so long. So, what would you recommend I do BEFORE I remove the engine and what checks would you give the components once removed?

I plan to do a compression check on all cylinders prior to removal to get an idea of the condition, what else should I be doing to ensure I spot anything that needs rectifying once removed?

Once the engine is removed I can obviously just totally strip it and send the block, crank and heads off to the local machine shop for checking but if I can simply replace bearings/gaksets etc then so much the better.

I had planned to clean up the heads somewhat but I am not sure if there are checks I can carry out whilst the engine is running to see if I need to get the valve guides looked at? Same for the bores and rings. I don't have a problem simply removing the pistons and checking the bores for scoring but is there a logical set of tests I can do to ensure I have covered all the probelms that it might have? It basically runs OK now but I figure while it is out of the car for the clean/paint I should take advantage and freshen up ithe innards.

I am sure I could have explained this quicker but I think you at least understand what I am trying to achieve here.

Thanks,
Paul

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Old 03-19-2006, 07:02 AM
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nope, not sure what you want to do. other than pulling and painting & checking.

what are your goals ? new pistons, bearing, cam ?
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Old 03-19-2006, 07:05 PM
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Thanks for the reply. I think based upon more searching online my best bet is to simply carry out a compression check and leave it at that.

If the check is OK then once the engine is removed simply replace the bearings and all gaskets along with the paint job. Clean the heads up and check the cam.

If however the compression check wasnt OK I would remove pistons and check bores and valves etc. Make sense?
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Old 03-19-2006, 07:39 PM
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what is expected of the engine ?

do a leak down test. do a search here.
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Old 03-19-2006, 07:55 PM
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when you say 'what is expected of the engine' I assume you are asking whether I am looking for 400HP, whether it sees strip action etc?

The car is an old school highboy and just for cruising. Non racing at all and to be honest little 'exuberant' driving!

I am really just wanting to ensure it is solid and performing well.
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Old 03-20-2006, 07:13 PM
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do a leak down test. if all is well. tear it down, check clearances. new gaskets and paint.

or. new bearings, hone with new rings, and a valve job.
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Old 03-20-2006, 08:36 PM
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Quote:
Originally Posted by Vortech 4.3
do a leak down test. if all is well. tear it down, check clearances. new gaskets and paint.

or. new bearings, hone with new rings, and a valve job.

Rings and bearings shouldn't be done without proper machine work. Bearings depend on the surface of the journals to operate correctly, so the block has to be cleaned and align-honed to do the job right, rod caps resized etc.

If you've gotten that far, its time to do a rebuild!

K
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