MatraSport Forum

Each model => Murena => Topic started by: matra530 on October 08, 2018, 01:48:08 pm



Title: Changing valve stem seal
Post by: matra530 on October 08, 2018, 01:48:08 pm
Hello,

Im new to your forum. My Name is Andreas and Im driving a Murena 2.2 since 2000. When I bought the car, there was much to do.  Now I had a long time many fun with my car, but now it needs a little bit more attention. When the engine is warm and I have to stop for a while I blast a grey cloud out of the exhoust.
I think, that the valve steam seals are to hart after 18 years an I have to change them again.
But now I would like to it without removing the engine again. Did somone of you managed to do that?. Ive checkt a few tools for this work, but they did not fixed with the head from the 2,2 or they needed more space.
It would be greate if someone from you will have a good idea for me.
Please excuse my terrible english. Last english lesson ist 30 years ago.

Matra530


Title: Re: Changing valve stem seal
Post by: roy4matra on October 08, 2018, 11:27:25 pm
Hello,

Im new to your forum. My Name is Andreas and Im driving a Murena 2.2 since 2000. When I bought the car, there was much to do.  Now I had a long time many fun with my car, but now it needs a little bit more attention. When the engine is warm and I have to stop for a while I blast a grey cloud out of the exhoust.
I think, that the valve steam seals are to hart after 18 years an I have to change them again.
But now I would like to it without removing the engine again. Did somone of you managed to do that?. Ive checkt a few tools for this work, but they did not fixed with the head from the 2,2 or they needed more space.
It would be greate if someone from you will have a good idea for me.
Please excuse my terrible english. Last english lesson ist 30 years ago.

Matra530

Yes we've changed the inlet valve seals recently with the cylinder head still fitted, using a Snap-on tool I've had for many years.  It's a CG90 I've used many times.  We couldn't get at the exhaust valve seals as easily so didn't try to change them since it's less likely they will be causing the oil ingress.

Consider when the exhaust valves are open the exhaust gasses are pushing out and would more likely push the oil back, but when the inlet valves are open the air/fuel mixture is being drawn in and oil can be drawn in past poor valve stem seals too.

Once we had changed the inlet valve seals (and found one broken up) the engine ran fine with no more oil leaking in and causing smoke out of the exhaust.

Make sure you have good new valve seals before you start the job.  See my website for both a warning and information.

Roy


Title: Re: Changing valve stem seal
Post by: matra530 on October 09, 2018, 09:04:22 am
Hello Roy,

thanks for answering. Ive tried to work with some similar tools. But they were a litte bit to big. I will looking for your tool. Do you still own the tool? would it possible to you to send me the dimensions from it?

Ive got inlet valve seals from the Peugot Turbo. Part Number 0956.14. Looking much more better then the valve seals, Ive bought last time.

The work will be terrible, but it is important. I dont like the car driving with this cloud behind me.

Matra530


Title: Re: Changing valve stem seal
Post by: Jon Weywadt on October 10, 2018, 04:16:23 pm
--
Yes we've changed the inlet valve seals recently with the cylinder head still fitted
---
Roy
Hello Roy.
Can that be done the same way on a Lurena 2.2?


Title: Re: Changing valve stem seal
Post by: matra530 on October 10, 2018, 04:37:50 pm
Didnt we talk about the 2.2?


Title: Re: Changing valve stem seal
Post by: Jon Weywadt on October 11, 2018, 03:41:25 pm
Didnt we talk about the 2.2?
I think I got confused by your  matra530 name.  :D


Title: Re: Changing valve stem seal
Post by: matra530 on October 11, 2018, 08:11:54 pm
Sorry,

that is right. This is a project without time... Enough to do with one car.  ;D


Title: Re: Changing valve stem seal
Post by: roy4matra on October 13, 2018, 02:48:06 pm
--
Yes we've changed the inlet valve seals recently with the cylinder head still fitted
---
Roy
Hello Roy.
Can that be done the same way on a Lurena 2.2?

I presume you meant Murena 2.2 jon.  ;)  Yes with this tool you could probably do many engines, although I've only done a few.  If you haven't seen the tool, it is worth checking it out although I'm not sure it's still available now.

Roy


Title: Re: Changing valve stem seal
Post by: Jon Weywadt on October 13, 2018, 05:48:10 pm
--
Yes we've changed the inlet valve seals recently with the cylinder head still fitted
---
Roy
Hello Roy.
Can that be done the same way on a Lurena 2.2?

I presume you meant Murena 2.2 jon.  ;) 
---
Roy
Ah auto-correct bites again.  :D

Anyway, I wish I was still able to do the work needed. :(


Title: Re: Changing valve stem seal
Post by: matra530 on October 26, 2018, 07:27:07 am
--
Yes we've changed the inlet valve seals recently with the cylinder head still fitted
---
Roy
Hello Roy.
Can that be done the same way on a Lurena 2.2?

I presume you meant Murena 2.2 jon.  ;)  Yes with this tool you could probably do many engines, although I've only done a few.  If you haven't seen the tool, it is worth checking it out although I'm not sure it's still available now.

Roy

Hello Roy,

I will try to order the tool in GB. There it is still on stock.
In Germany you can only buy this tool in used conditions for the price higher than the new one...


Title: Re: Changing valve stem seal
Post by: roy4matra on October 29, 2018, 10:47:53 am
Hello Roy,

I will try to order the tool in GB. There it is still on stock.
In Germany you can only buy this tool in used conditions for the price higher than the new one...

Even in the U.K. this is no longer available, even if a website proclaims it is! (I checked with Snap-on last week)  So again it would have to be second hand... and there is probably a better option now anyway.

There are some new tools now on the market for removing the valve spring collets, retainer and springs, to get at the seals and should do the job in situ.  Beware though, the Murena valve stems are almost 9mm diameter and there are two sizes of this tool.  The more common one is only for 4.5 to 7.5 mm dia. valve stems and is therefore too small.  Lisle list one that does 5/16" to 3/8" dia. stems and would therefore be fine for the Murena.

Roy


Title: Re: Changing valve stem seal
Post by: MatraIan on November 22, 2018, 11:46:34 am
I had tried to order one of the CG90 snap-on tools in the UK but the website i found was no longer trading.
The newer Lisle 36200 looks like it will be a lot less fiddly, There is a used CG90 on US ebay, another newer snap on version and also some cheap foreign copies, see below links:
This CG90 from the US:

https://www.ebay.co.uk/p/Vintage-Snap-on-Tools-Valve-Spring-Compressor-CG90/1224921558?iid=292799539639&_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160927153312%26meid%3D288411ca2cef430589672449a014b948%26pid%3D100013%26rk%3D1%26rkt%3D12%26sd%3D292799539639%26itm%3D292799539639&_trksid=p2047675.c100013.m1986

Newer Snap on VST100 version looks like it may do the job also from US:
https://store.snapon.com/Valve-Spring-Compressors-Compressor-Valve-Spring-Cam-Operated-Blue-Point--P641321.aspx

The cheaper and poorer made one (probably not ok for a mechanics heavy usage but may ok for occassional DIY) that I ordered and at the price i can just but another if it fails:
https://www.ebay.co.uk/itm/Universal-Engine-Overhead-Valve-Spring-Compressor-Tools-Removal-Installation/173406948558?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

Ian


Title: Re: Changing valve stem seal
Post by: matra530 on January 22, 2019, 09:14:01 pm
The Lisle 3650 looks very easy. Ive found a youtube vid and I cant believe that they presse the ventilate without tools. Only pushed them down. I will try to compress al ventilate in the garage in the next days.

Thanks for your support.


Title: Re: Changing valve stem seal
Post by: Jon Weywadt on January 30, 2019, 05:58:11 pm
-----
 Ive found a youtube vid
------
Could you post a link to the youtube video, please.  :)


Title: Re: Changing valve stem seal
Post by: Ren Holm on February 02, 2019, 06:58:31 pm
Hey Jon.

I think its here: https://www.youtube.com/watch?v=VIwmf0nhljU


Title: Re: Changing valve stem seal
Post by: matra530 on February 08, 2019, 08:25:16 am
Thats right ;D.
A pregnant wife to show that it is easy. Great idea.