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Author Topic:   Fresh'n up the motor
ncichos7
Dirt Full Roller

Total posts: 53
posted October 12, 2004 01:42 PM  
hey, i've got a motor with about 17 nights on it. this is my first offseason so what all needs to be replaced or freshened up on my motor? what should be done tranny wise?

FlyNLoIMCA17
Dirt Forum Champ
Total posts: 753
posted October 12, 2004 04:25 PM  
Go through the engine and visually check everything, I'm assuming you had no problems out of the engine. Check for excessive wear on the crank and rod journals. Check your piston to cylinder wall clearence. Check the wear patterns on the camshaft, lifters, and pretty much all of the valve train, including the valve stems. Also look at your cam bearings to make sure they aren't scared or burnt. If everything checks good the replace the main and rod bearings, replace the piston rings and I like to replace the oil pump also, at least tear it down and look for debris or excessive wear. Then put it back together and go racing!! As far as the tranny goes....I'm assuming you have an automatic. If I didn't have any problems with it I would just change the fluid and filter and go back with it.

Eljojo
Dirt Forum Champ
Total posts: 968
posted October 12, 2004 06:41 PM  
A late model with 100 lap features would need a complete freshen...that motor would have around 2000 laps on it. A Pure Stock running 20 lap features would have only 400/500 laps. If you haven't pulled the motor yet, run a leakdown test to see how the top end of the motor and the rings are doing. Pull it out and pull the oil pan and a rod and main cap or two and inspect the bearing wear. If all's well, lube them up, drain all the water out and wait till spring!

FlyNLoIMCA17
Dirt Forum Champ
Total posts: 753
posted October 12, 2004 07:59 PM  
yeah I have tried that gettin' by till next year stuff and it never worked for me!!! I'm not lucky at all.

joetaylor
Dirt Forum Champ
Total posts: 640
posted October 12, 2004 08:13 PM  
AT MIN. I WILL CHANGE THE RINGS & BEARING AND CHECK FOR ANY OUTHER SIGNS OF EXCESSIVE WEAR OIL PUMP EVERY OUTHER YEAR TIMMING CHAIN IF STREACHED

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if every thing is under control your not fast enough

Raz_900
Dirt Forum Champ
Total posts: 635
posted October 18, 2004 06:09 PM  
Unless you expect something's wrong, like oil pressure dropped, power dropped, smoked, blowby etc, I'd leave it in. Just change the oil and put antifreeze in it then put it into hibernation.

Take the money you'd throw away replacing perfectly good parts and build another shortblock and buy a spare cam/lifter kit. Maybe even pick up some rocker arms and pushrods.

If you don't have 2 motors already... save yourself some grief and build another now. Take the oppurtunity to make the 2nd one better (from what you learned this year) and if nothing else swap it in halfway through the season.


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