Messages

1

Lounge / Anybody use a tumbler polisher I have some questions

« on: January 05, 2014, 01:30:36 PM »

I used one for doing all my nuts and bolts, started with triangle like abrasive and then went to walnut and it cleaned them up to the point where you could polish it easy.  went thru way too many problems.  the lid nut vibrates loose real easy, double nut it and then the washer under the nut will spin and kill all the threads on the shaft.  so ditched the lid altogether and just put a 5 gallon bucket over the whole thing and put weight on the bucket.  keeps the noise down cause you need to run it for 12 hours but made everything inside dusty and covered in dust.

2

Engine and Bottom End / helping a friend 87 build

« on: December 12, 2013, 04:23:43 PM »

ill have him check tonight but it would be almost a 1/16th thick....

3

Engine and Bottom End / helping a friend 87 build

« on: December 11, 2013, 07:16:03 PM »

I googled it and the part number is just an older number but the same piston.  if it was short rod id be a lot deeper in the hole or vice versa sticking up past the deck.  could the cylinder be wrong?  the piston sitting .085 in the hole is whats gonna stop from getting squish anywhere close to .060 or better.

4

Engine and Bottom End / helping a friend 87 build

« on: December 11, 2013, 07:05:32 PM »

wiseco says 562m06675 and he got one off ebay that is 562p3 for 87-89 atc/trx prolite....whats the 562p3 piston???

5

Engine and Bottom End / helping a friend 87 build

« on: December 11, 2013, 06:08:04 PM »

no spacer plate and the correct piston was ordered.  this is why I don't understand.  the thin part of the stock head gasket split into 3 pieces of .010.  that wont get us any closer.

6

Engine and Bottom End / helping a friend 87 build

« on: December 10, 2013, 09:10:37 PM »

any help?

7

Engine and Bottom End / helping a friend 87 build

« on: December 07, 2013, 05:46:25 PM »

checking squish with no headgasket left me around .085 which is still too high to get the right squish and wont get the best compression

8

Engine and Bottom End / helping a friend 87 build

« on: December 07, 2013, 02:18:44 PM »

I been looking around and reading up on what I could find but now my friend is at a point where I need to ask for help.  

hes got an 87 long rod motor and someone had rebuilt the whole motor with hot rods crank and new piston but caught a ring putting it in and it trashed the piston and cylinder.  he got it bored to 66.75 and put in a wiseco piston.

with the cylinder bolted down and head put on with the old .050 gasket, his squish is .110.  the piston is .085 down in the hold from the deck.  

question is how do we get his squish down to the .040 to .060 range?  I assume cutting the head too much raises your compression and puts you in race gas area.  So do you cut the top of the cylinder?  I read you can just use the single thin layer of headgasket (.010) also but that still doesn't get us close.  

2nd question.  hes got a mikuni 38mm carb off his tecate 250 he is thinking of using.  its got a round slide instead of flat.  is this a good carb to swap out for the stock one?  he thinks the jetting would be about the same as he had on the tecate unless someone else got a better opinion.  

thanx for help, im usually on trx450r.org