ital-web.de Foren-Übersicht
Autor Nachricht

<  9 1/2 und 1200 Sport  ~  9 1/2 Engine rebuild and other stuff

VesaII
Verfasst am: 26.1.2020, 15:37 Antworten mit Zitat
Morinisti Morinisti
Anmeldedatum: 24.04.2018 Beiträge: 151
Front cylinder intake valves were strangely collecting soot although we made a best possible valve job with bronze guides and everything.
I have checked oil does not come cause of blow by, as it does not exist as Klaus at wahl-spezialkolben.de made a superb job with pistons.

After measuring valve movement i noticed it is same as actual lift. Seals are not broken, so my hypothesis is that retainers do come too close and create pressure which push oil between sealing and valve stem and to intake channel.

Cause of this two mm:s must be found. One comes from valve guide seals which are grinder one mm off and one from grinded down retainer.

Hope this simple fix do solve unpleasant contamination problem.
********
2.2.2020 Edit: ...Actually it does not, as i noticed new bronze valve stems are already worn out, just after 10000km. Valve head lifted off today. Research will continue.

********



_________________
Br,
Vesa
Benutzer-Profile anzeigen Private Nachricht senden E-Mail senden
VesaII
Verfasst am: 14.2.2020, 22:24 Antworten mit Zitat
Morinisti Morinisti
Anmeldedatum: 24.04.2018 Beiträge: 151
Problem is worn out Renault valve stem guides.

Now i am looking for originals or similar, not bronze, but they are not found on Morinis catalog?!?

They only have M97000003400, where you need to buy heads together with guides. They must be kidding...

How have you solved this? Which iron guides do Morini use? They must be used in some other engine as well.


Zuletzt bearbeitet von VesaII am 15.2.2020, 22:24, insgesamt einmal bearbeitet

_________________
Br,
Vesa
Benutzer-Profile anzeigen Private Nachricht senden E-Mail senden
marsnepon
Verfasst am: 15.2.2020, 21:38 Antworten mit Zitat
Morinisti Morinisti
Anmeldedatum: 05.04.2014 Beiträge: 31
VesaII hat Folgendes geschrieben:
Problem is worn out valve stem guides.

Now i am looking for originals or similar, but they are not found on Morinis catalog?!?

They only have M97000003400, where you need to buy heads together with guides. They must be kidding...

How have you solved this? Which iron guides do Morini use? They must be used in some other engine as well.


Hello...

freccia G11308 11.07mm x40.5mm (Renault 1.5dci)
freccia G3552. 11.06mm x35.9mm (Audi VW 1.8t 2.0 2.4 2.8.......)
Benutzer-Profile anzeigen Private Nachricht senden
VesaII
Verfasst am: 15.2.2020, 22:46 Antworten mit Zitat
Morinisti Morinisti
Anmeldedatum: 24.04.2018 Beiträge: 151
marsnepon hat Folgendes geschrieben:


Hi

How long have you driven with bronze guides? How long do they last?

Btw. R1613040 is partnumber for original valve guides. a 22e

_________________
Br,
Vesa
Benutzer-Profile anzeigen Private Nachricht senden E-Mail senden

Beiträge der letzten Zeit anzeigen:  

Alle Zeiten sind GMT + 2 Stunden
Seite 5 von 5
Gehe zu Seite Zurück  1, 2, 3, 4, 5
Neues Thema eröffnen

Gehe zu:  

Du kannst keine Beiträge in dieses Forum schreiben.
Du kannst auf Beiträge in diesem Forum nicht antworten.
Du kannst deine Beiträge in diesem Forum nicht bearbeiten.
Du kannst deine Beiträge in diesem Forum nicht löschen.
Du kannst an Umfragen in diesem Forum nicht mitmachen.