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Author Topic:   Engine Refresh????
posted March 30, 2004 01:23 PM
All depends on what you have and what you want to do, what class your in, how much you race etc. IT can entail anything from simply rings and bearings to complete rebuild. You will hear guys that run the same engine until it causes problems which may be 2 or 3 years while others will go through them every season. In the mod I have always gone by a night count. Unless something else happens along the way I would go 25 nights then look at freshening them. I have heard late model guys that count laps and run 1000 laps. You also have to look at the quality of parts involved and how hard it is run. If you are using a lot of stock components and really wringing it out then you might want to go through them just to check for possible failures ready to happen. Its really a loaded question without knowing what kind of motor you are talking about and what it is used as.

posted March 30, 2004 02:05 PM
Use the 350. Or if you want the extra CID make it a 383. Overall, the 400 will cost more since the blocks are weaker, less common and cost more to replace (the block that is).

I would recommend a maintenance schedule that includes compression checks and oil analysis (Amsoil does it for like $10) and records of oil pressure. When oil pressure and/or compression drop noticably it's time to rebuild. Measuring valve lift or occasionally pulling a couple lifters will check on cam condition. If oil pressure is much below 20 at hot idle and 45 at hot operating speed, it's done.

Personally, I think tearing a motor down 'just because' in a street stock class is wasting alot of good parts. If you tear it down and everything looks new, then it wasn't ready to be torn down.

A typical refresh for a totally stock type engine is pretty cheap. Felpro gaskets are $30, rings $30 and $50 for rod & main bearings. Throw in another $40 for a timing chain and oil pump. All told about $150.

Go with performance bearings, gaskets and 1/16" rings and a 'good' timing chain and that refresh will be around $400.

FIgure on $100-$200 for cam & lifters depending on what you run.

Hope that helps give you an idea of what it takes.

posted March 30, 2004 03:55 PM
i freshen mine every 20 nites basicly just get a re ring kit from midwest $70 and replace oil pump and timing chain this year had some wear on the cam gear so that will be replaced so your looking at about $270 total that without any machine work being done the motor i bought had fresh heads on it so thats saveing me a little

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