Type 4 Running

17 posts · joined Jan 2015 · 11 Jun 2015, 4:58 pm

#1014871

Got my type 4 running today, but it is making a shocking noise.
Just like the clip attached.
My first thought is either a dropped valve or a broken rocker, does anybody have any ideas on where to steer me to look first, I will pull the motor on the weekend and depending on what I find will decide if I stay with the type 4 or go for a subi conversion..

cb john Wolfsburg Wizard

470 posts · joined Jun 2007 · 11 Jun 2015, 5:38 pm

#1014872

Sounds like hydraulic lifter..

Gusthewonderslug Learner Dubber

17 posts · joined Jan 2015 · 11 Jun 2015, 5:48 pm

#1014874

same sound again it must be pretty common!

Gusthewonderslug Learner Dubber

17 posts · joined Jan 2015 · 11 Jun 2015, 5:59 pm

#1014877

from the decal on the side of the engine I have solids so its unlikely to be a dead lifter but happy hear why it could be.

grumble Son of Jim - Creator of Good

2,672 posts · joined Jun 2008 · 11 Jun 2015, 7:57 pm

#1014891

Possibly a stuck valve or a valve adjuster come unscrewed if not hydraulic. pull the covers and check the clearances.

psimitar Son of Jim - Creator of Good

2,506 posts · joined Jan 2009 · 11 Jun 2015, 9:26 pm

#1014903

It definitely sounds valve train related. Check for a bent pushrod as I had a Tarago sound similar. The bent pushrod was pushing the rocker off the valve tip and onto the spring retainer. It eventually popped the collets so the valve dropped and lunched the engine.

madness is in the eye of the beholder 👍

vlad01 Compulsive Aussie Vee Dubber

4,270 posts · joined Jun 2010 · 13 Jun 2015, 12:12 pm

#1014976

The sound is like valve train but the speed is at engine speed not half speed like valve train it seems.

Sounds like a rocker arm related noise.

71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE

Gusthewonderslug Learner Dubber

17 posts · joined Jan 2015 · 13 Jun 2015, 10:10 pm

#1015020

Pulled the donk today, without a strip down it looks like it's a big end.
Turn it over with a socket 1 clunk for every revolution.
Looks like the time has come to make a call. To Subi or not To Subi?
The bus has a 5 rib box not a 6 rib so if I do convert it to run a Subi, I probably should do a ratio change as well.
Anybody got a 2nd hand conversion kit lying around?
Gus

Gusthewonderslug Learner Dubber

17 posts · joined Jan 2015 · 13 Jun 2015, 10:14 pm

#1015021

As a final check, tomorrow I will take the rockers off and see if I still get the noise when I turn it over,
That should eliminate that being the issue.

vlad01 Compulsive Aussie Vee Dubber

4,270 posts · joined Jun 2010 · 14 Jun 2015, 9:07 pm

#1015079

Gusthewonderslug wrote:Pulled the donk today, without a strip down it looks like it's a big end.
Turn it over with a socket 1 clunk for every revolution.
Looks like the time has come to make a call. To Subi or not To Subi?
The bus has a 5 rib box not a 6 rib so if I do convert it to run a Subi, I probably should do a ratio change as well.
Anybody got a 2nd hand conversion kit lying around?
Gus

not sure what year your bus is, but a raby camper special engine kit will be most satisfying!

No one has ever been disappointed by them.

http://type4store.com/engine-kits/camper-special-engine-kit-for-72-74.html

71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE

psimitar Son of Jim - Creator of Good

2,506 posts · joined Jan 2009 · 14 Jun 2015, 9:24 pm

#1015081

If you do go subie then price up the gearbox too as the fifth gear may may be cost effective next to a built or rebuilt VS box.

madness is in the eye of the beholder 👍