side housing tolerances (flatness)

Carl · February 05, 2006, 09:19:07 PM

ooooooooooooooooowwwwwwwhhhh!
Now your asking!
I will have a look and let you know.
Regards
Carl

alban1973 · February 05, 2006, 09:22:35 PM

Just poped up to get some photos, What is the price difference from2nd to 3rd gen rotor housings, any modification to swap, and would you recomend as this housing looks like it has seen better days,,,, What causes this damage as the rest is fine?

pic here

stuart wizy · February 05, 2006, 09:23:26 PM

top man
i will bell you tommorow about tolerances on these plates whan ive checked them proper at work, got a feeling im gonna need a new end plate as well.
if i try a bridge port on my side housings what porting do i need on rotor housings?

alban1973 · February 05, 2006, 09:27:12 PM

just seen you previous post, sorry missed that while sorting the photos.... :god

stuart wizy · February 05, 2006, 09:33:04 PM

alban are you building it back up stock or doing some porting?

alban1973 · February 05, 2006, 09:46:28 PM

not really sure at the moment on mods at the moment, I have lost a bit of time on it towards the end of this week. I want to get it all cleaned up and see where I am with the condition.. I need to know what different modification do in terms of drivability. The car before had plenty of power but little low down torque, The roads we have around where i live are very good and fun, so loads of power is not necessary, I am not at all interested in total power as i do not drive on straight roads as there are not many here..a good flat torque curve and good suspension set up would be the best results. the engine did lack flexibilty on long winding hills and demanding roads. So I do need some advise in this area....What are your plans???

Carl · February 05, 2006, 09:49:53 PM

they maybe ok,but don\'t look too pretty.
hard to tell in pics.
Regards
Carl

alban1973 · February 05, 2006, 09:56:14 PM

Yes photos are not the best way to tell, One on the photos i could live with, but the one with the chrome missing around the exhaust port does not bode well. Seems very odd wear, but with not seeing these engines before I would not know... I take it you have good second hand units available??? Is that recommended to use second hand??

Carl · February 05, 2006, 10:06:51 PM

When the housings get hot under stress they can distort the sliding surface that the apex seals run on,hence the strange but sometimes seen wear patterns.When the housings are cold they maybe flatter than when running and being driven hard.
You can use secondhand housings,but they need to be very good.
Regards
Carl

hairyhoover · July 05, 2007, 09:41:43 PM

Hi Carl, as you know my end plates need replacing or lapping, is lapping really a good idea? as ive been told that its impossible to get the surfaces flat which was cause all sorts of problems with bearings further down the line

Carl · July 05, 2007, 10:24:26 PM

Quote from: hairyhooverHi Carl, as you know my end plates need replacing or lapping, is lapping really a good idea? as ive been told that its impossible to get the surfaces flat which was cause all sorts of problems with bearings further down the line

Depends on the lapper and how much is taken off,but as for the side plates remaining true in relation to the bearing\'s,they are very good,and we have no issues.I should know as we have even lapped race side housings with no problems.
Regards
Carl