Rebuild/Upgrade progress and Qs thread

Ender · 02-16-2010, 09:19 PM

I think he pulled the dowels, I don't remember if he machined the step. He might have. A good machinist who does this type of work should know.

Shadow24v · 02-28-2010, 11:24 PM

Got the ports back from hot tanking and made some interesting discoveries: the motor has been rebuilt before. The crank pulley bolt was lathered in blue loctite and the center iron is DEFINITELY newer than the front and rear irons. I measured the wear on the irons and the center and rear irons only came up with .002-.003 step wear max. the front iron came up with .004 step wear

Is this beyond the limitations of lapping? How much can you take off the irons with lapping and still be OK? If they aren't able to be lapped due to wear, i am working on a deal for an S5 long block to use so hopefully i can use those parts...

the rotors also seem to have a lip of sorts on the back part of the apex seal groove. Is this normal wear? the apex clearances were in spec before the rotors were totally pulled apart.

Also, can you lap the housings to eliminate pitting around the water seals? (if you look at the pics, i doubt my housings are useable anyways...)

Rear Iron (notice how rusted the hose nipples are)

Center Iron (notice how new and fresh the nipples are and the general condition of the iron)

Center vs rear

Front Iron (worst step wear of .004)

Front vs center

Shadow24v · 02-28-2010, 11:31 PM

Rotors (lip edge and weights)

Lip i mentioned before

Rear rotor

Front rotor

Rear housing (im gonna guess bad wear but some input on the wear and wear patterns would be appreciated)

Front Housing (again, bad wear and im guessing an unusable housing

)

02-28-2010, 11:24 PM	#2
Shadow24v Rotary Fan in Training Join Date: Feb 2009 Posts: 69 Rep Power: 17	Got the ports back from hot tanking and made some interesting discoveries: the motor has been rebuilt before. The crank pulley bolt was lathered in blue loctite and the center iron is DEFINITELY newer than the front and rear irons. I measured the wear on the irons and the center and rear irons only came up with .002-.003 step wear max. the front iron came up with .004 step wear Is this beyond the limitations of lapping? How much can you take off the irons with lapping and still be OK? If they aren't able to be lapped due to wear, i am working on a deal for an S5 long block to use so hopefully i can use those parts... the rotors also seem to have a lip of sorts on the back part of the apex seal groove. Is this normal wear? the apex clearances were in spec before the rotors were totally pulled apart. Also, can you lap the housings to eliminate pitting around the water seals? (if you look at the pics, i doubt my housings are useable anyways...) Rear Iron (notice how rusted the hose nipples are) Center Iron (notice how new and fresh the nipples are and the general condition of the iron) Center vs rear Front Iron (worst step wear of .004) Front vs center Last edited by Shadow24v; 03-03-2010 at 07:52 AM.

02-28-2010, 11:31 PM	#3
Shadow24v Rotary Fan in Training Join Date: Feb 2009 Posts: 69 Rep Power: 17	Rotors (lip edge and weights) Lip i mentioned before Rear rotor Front rotor Rear housing (im gonna guess bad wear but some input on the wear and wear patterns would be appreciated) Front Housing (again, bad wear and im guessing an unusable housing ) Last edited by Shadow24v; 03-03-2010 at 07:47 AM.