MatraSport Forum

Each model => Murena => Topic started by: LarsB on May 03, 2010, 10:04:45 pm


Title: Engine out, need new pistons?
Post by: LarsB on May 03, 2010, 10:04:45 pm
Sad news, was taking out the engine to mount triggerwheel for MS and EDIS, but discoverd (not without surprise) that I will need new bearings, pistons and valveguides.   

my cylinders measure 91,74-91,75
my pistons measure   91,56-91,59


+0,10 measures

cylinders           91,80-91,807

pistons   9N2    91,76-91,773
              N9T    91,74-91,747


Wich pistons are adviseble?
Also do anyone have expiriense with K-line valveguide inserts, or should I just get new guides?

Title: Re: Engine out, need new pistons?
Post by: LarsB on May 03, 2010, 10:16:11 pm
(http://img.skitch.com/20100503-q2whewfcy1uwkfgxx6b3tmbh7s.preview.jpg) (http://skitch.com/lars-bjordal/db2dw/p1020289.jpg)
Click for full size (http://skitch.com/lars-bjordal/db2dw/p1020289.jpg) - Uploaded with plasq (http://plasq.com)'s Skitch (http://skitch.com)
(http://img.skitch.com/20100503-r185tufd3csibqghxj84fge3xq.preview.jpg) (http://skitch.com/lars-bjordal/db2n1/not-so-nice)
Click for full size (http://skitch.com/lars-bjordal/db2n1/not-so-nice) - Uploaded with plasq (http://plasq.com)'s Skitch (http://skitch.com)


As you can see I found quite alot of dirt and silicone sealant :(  The oilpump inlet was almost blocked by silicone, and large "threads of it hanging on the edges of the gasket