CAM BELT FAILURE! V6

Technical questions and answers about the Mazda Bongo

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mikeWalsall
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Re: CAM BELT FAILURE! V6

Post by mikeWalsall » Wed Nov 12, 2014 2:44 pm

I have a V6 .. the previous owner supplied me with the handbook and workshop manual .... for a diesel ... strange as he was a member of Bongo Fury .. and V6 manuals are available ..

http://www.igmaynard.co.uk/bongo/mercha ... tm#Manuals

So I imagine there are members with the V6 manual who can help you ..
JAL Mushroom roof,12/240v, fridge, cooker, sink, LPG V6 .. (written off @ £5500 Nov 2016)
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Simon Jones
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Re: CAM BELT FAILURE! V6

Post by Simon Jones » Wed Nov 12, 2014 7:30 pm

Definitely get yourself the manual. It comes in two parts: engine and chassis. They cover both petrol engines and it's better value to buy as a pair.
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Re: CAM BELT FAILURE! V6

Post by nth » Wed Nov 12, 2014 8:52 pm

If anyone knows what other uk model mazda's use this engine & what years i will look up autodata to see if it lists as an interference engine or not.
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Simon Jones
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Re: CAM BELT FAILURE! V6

Post by Simon Jones » Wed Nov 12, 2014 9:20 pm

The only models listed are non-UK: Mazda 929 and MS9:

http://en.m.wikipedia.org/wiki/Mazda_J_engine#J5
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AeroNut
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Re: CAM BELT FAILURE! V6

Post by AeroNut » Tue Nov 25, 2014 1:42 pm

Hi all,
just a quick update.
Been really busy at work etc and the weather has been lousy over the last couple of weekends... so nuffin done except buoying a lot of bits... possibly now looking for some one local to Witham in Essex that can be trusted to do a good job?
Any suggestions? I think there was a garage over in Braintree? can anyone recall....

Regards

Terry D
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haybal
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Re: CAM BELT FAILURE! V6

Post by haybal » Tue Nov 25, 2014 4:38 pm

AeroNut wrote:Hi all,
just a quick update.
Been really busy at work etc and the weather has been lousy over the last couple of weekends... so nuffin done except buoying a lot of bits... possibly now looking for some one local to Witham in Essex that can be trusted to do a good job?
Any suggestions? I think there was a garage over in Braintree? can anyone recall....

Regards

Terry D
Hi Terry

LA Cars (Braintree)
01376 528079

This is the one on the Bongo freindly garage list

Barry
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AeroNut
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Re: CAM BELT FAILURE! V6

Post by AeroNut » Mon Dec 01, 2014 7:56 pm

Hi all,
finally bit the bullet and got a local garage in Braintree to take a look at it...

Not such good news. :( . it appears there is a significant amount of damage in the engine... to a degree that allows the cams to turn over by hand quite easily. They tell me this shouldn't happen like that.

Rebuilds are going to be inherently very expensive..... :-({|=

Sounds like I'm heading for another engine from somewhere... if I can source one?

:?: Anyone know of a source of low mileage examples.....

????

Terry D :-k :-k
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Northern Bongolow
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Re: CAM BELT FAILURE! V6

Post by Northern Bongolow » Mon Dec 01, 2014 8:02 pm

this guy had a few in when i was there last week. good seller too.

give george a ring, tell him i said to ring, it may help a little :wink:

http://www.bongospares.co.uk/
teenmal
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Re: CAM BELT FAILURE! V6

Post by teenmal » Mon Dec 01, 2014 8:29 pm

AeroNut wrote:Hi all,
finally bit the bullet and got a local garage in Braintree to take a look at it...

Not such good news. :( . it appears there is a significant amount of damage in the engine... to a degree that allows the cams to turn over by hand quite easily. They tell me this shouldn't happen like that.

Rebuilds are going to be inherently very expensive..... :-({|=

Sounds like I'm heading for another engine from somewhere... if I can source one?

:?: Anyone know of a source of low mileage examples.....

????

Terry D :-k :-k
Has the Garage/Mechanic actually removed the Head/Heads.???
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AeroNut
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Re: CAM BELT FAILURE! V6

Post by AeroNut » Tue Dec 02, 2014 1:22 pm

No they haven't removed the head(s)

They are going by the fact they can't feel any resistance offered back through the followers pushing back on the cam. This should stop you from easily turning the cams... is this true?

Is there a good sectional or piece part drawing of the valve train....? are these hydraulic tappets? never asked these questions before on this engine....

...Ever optimistic....
Regards
Terry D
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AeroNut
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Re: CAM BELT FAILURE! V6

Post by AeroNut » Tue Dec 02, 2014 1:25 pm

Northern Bongolow wrote:this guy had a few in when i was there last week. good seller too.

give george a ring, tell him i said to ring, it may help a little :wink:

http://www.bongospares.co.uk/

Hi NB
Just rang the gentleman in question... seems like a good supplier... sadly he's only got parts not a complete motor...

Really looking for a complete motor... If I had the time I would love to rebuild this one but sadly having to work for a living....

Seen a couple on *Bay.... :-k

Regards

Terry D
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mikeWalsall
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Re: CAM BELT FAILURE! V6

Post by mikeWalsall » Tue Dec 02, 2014 2:09 pm

There are four cams .. 24 valves operating via 24 hydraulic tappets ..

http://lushprojects.com/bongopartsmk2/
JAL Mushroom roof,12/240v, fridge, cooker, sink, LPG V6 .. (written off @ £5500 Nov 2016)
teenmal
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Re: CAM BELT FAILURE! V6

Post by teenmal » Tue Dec 02, 2014 2:51 pm

AeroNut wrote:No they haven't removed the head(s)

They are going by the fact they can't feel any resistance offered back through the followers pushing back on the cam. This should stop you from easily turning the cams... is this true?

Is there a good sectional or piece part drawing of the valve train....? are these hydraulic tappets? never asked these questions before on this engine....

...Ever optimistic....
Regards
Terry D

Once you or they have removed the heads all should become apparent until then you will not know the extent of the damage (if any).

If you are adventurous you could always fit a new belt to test the engine, taking the necessary precautions.

The HLA only function when the engine is running (normally).

PS you might even see a problem when you remove the cam covers.

Good Luck.
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Doone
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Re: CAM BELT FAILURE! V6

Post by Doone » Tue Dec 02, 2014 9:56 pm

They are going by the fact they can't feel any resistance offered back through the followers pushing back on the cam. This should stop you from easily turning the cams... is this true?
You should feel strong resistance when trying to turn it by hand.
Allan's closed. We recommend PGS (Plymouth Garage Services) or Mayflower Auto Services in Plymouth.
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jimmo62
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Re: CAM BELT FAILURE! V6

Post by jimmo62 » Tue Dec 02, 2014 10:12 pm

Did you get a new belt? If so I would try fitting it and then turning the engine over with a spanner on the crankshaft - if it jams you have bent/stuck valves. I'm not convinced about the cams being hard to turn if they have hydraulic actuators as the valves may only get opened once there's hydraulic pressure - so with the engine off they may be easy to turn even if not damaged - perhaps someone with more detailed knowledge on how these work could comment? I'd say for the cost of a new belt it would be worth trying before spending a lot on taking off the heads or getting a new engine.
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