Block Decking

Technical questions and answers about the Mazda Bongo

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maxheadroom
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Re: Block Decking

Post by maxheadroom » Mon Mar 29, 2010 7:12 pm

Well how I re-assembled my head (well what I can remember, I have had a sleep since)

I put the glow plugs in, temperature sensors in, the inlet and exhaust studs in, oil fill pipe and water pipe on the drivers side on the bench (dinning room table actually very understanding wife =D> =D> )

Out to the car now…

Set No. 1 piston at dead top centre. Check fuel pump mark was lined up with timing mark.
Fitted head gasket in place.
Applied silicone as manual to water pump end of head.
Lower head on with the timing mark on the belt pulley set.
Greased/oiled all the head bolts threads and under the bolt head flange.
Tightened bolts hand tight and then four times to torque settings 22 ft/lbf (Bongo manual says 4 times, Ford ranger says 3)
Then put a paint mark on all the bolt heads and turned in sequence 90º
Then once more to a further 90º turn.

I think I then fitted new cam belt and new tensioner, re-checked timing marks.
I then re-fit exhaust gasket and manifold.
First poured oil over the cam and re-fitted the rocker cover to the manual including silicon sealant and new gasket.
Fitted all the hoses etc and alternator basically everything on this side of the engine.

Now to the other side of the engine…

Fitted injectors.
Buzz bar for the glow plugs.
Then the inlet manifold and new gasket. Don’t forget to re-fit the plate that holds electrical bumf and vacuum pipes the plate is held with two of the manifold bolts. (not that I forgot :oops: )
EGR was the re-fitted with two home made blanking plates (galvanized steel plate just a bit thicker than the old gaskets)
Re-fitted the vacuum pipes.
Re-fitted the fuel return and injector pipes. Be careful as I managed to snap the rubber fuel return pipe, as it was very brittle. Replacement found and fitted.
Fitted the air intake pipe that runs behind the engine and re-connected it to the turbo and air filter.
Re-checked the timing and then re-fitted the cover.

Connected all the water pipes and flushed engine out with hosepipe and then fitted new thermostat. Refilled coolant system with water.
Checked oil levels
Fitted the centre cover with hand brake, gear stick and any other electrical plugs and bits I could see

Stood back and went for restart bugger battery not charged enough as it had been stood for a while.

Charged battery and went for blast off I think it was about six turns of the key and hey presto the engine sprang into life. One very happy and satisfied Maxheadroom.
I had two nuts left over and thought ah that was the two I replaced holding the air pipe to engine as I couldn’t find them in the first place.

I just took my time and if in doubt log on here or lush projects etc.

I hope this is of help…..

any questions please do not hesitate to contact mikeonb4c :lol: :lol: :lol: :lol:
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ADAMD
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Re: Block Decking

Post by ADAMD » Mon Mar 29, 2010 8:33 pm

Wow max, that is some detailed list - great memory.
I have followed most of it, but don't have the manual,
and so don't know the bit about the silicon sealant.
Could Some one expand on that bit.
Thanks for everyones help.
Adam
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maxheadroom
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Re: Block Decking

Post by maxheadroom » Mon Mar 29, 2010 8:38 pm

PM sent :D
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mikeonb4c
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Re: Block Decking

Post by mikeonb4c » Tue Mar 30, 2010 10:19 am

maxheadroom wrote:Well how I re-assembled my head (well what I can remember, I have had a sleep since)

I put the glow plugs in, temperature sensors in, the inlet and exhaust studs in, oil fill pipe and water pipe on the drivers side on the bench (dinning room table actually very understanding wife =D> =D> )

Out to the car now…

Set No. 1 piston at dead top centre. Check fuel pump mark was lined up with timing mark.
Fitted head gasket in place.
Applied silicone as manual to water pump end of head.
Lower head on with the timing mark on the belt pulley set.
Greased/oiled all the head bolts threads and under the bolt head flange.
Tightened bolts hand tight and then four times to torque settings 22 ft/lbf (Bongo manual says 4 times, Ford ranger says 3)
Then put a paint mark on all the bolt heads and turned in sequence 90º
Then once more to a further 90º turn.

I think I then fitted new cam belt and new tensioner, re-checked timing marks.
I then re-fit exhaust gasket and manifold.
First poured oil over the cam and re-fitted the rocker cover to the manual including silicon sealant and new gasket.
Fitted all the hoses etc and alternator basically everything on this side of the engine.

Now to the other side of the engine…

Fitted injectors.
Buzz bar for the glow plugs.
Then the inlet manifold and new gasket. Don’t forget to re-fit the plate that holds electrical bumf and vacuum pipes the plate is held with two of the manifold bolts. (not that I forgot :oops: )
EGR was the re-fitted with two home made blanking plates (galvanized steel plate just a bit thicker than the old gaskets)
Re-fitted the vacuum pipes.
Re-fitted the fuel return and injector pipes. Be careful as I managed to snap the rubber fuel return pipe, as it was very brittle. Replacement found and fitted.
Fitted the air intake pipe that runs behind the engine and re-connected it to the turbo and air filter.
Re-checked the timing and then re-fitted the cover.

Connected all the water pipes and flushed engine out with hosepipe and then fitted new thermostat. Refilled coolant system with water.
Checked oil levels
Fitted the centre cover with hand brake, gear stick and any other electrical plugs and bits I could see

Stood back and went for restart bugger battery not charged enough as it had been stood for a while.

Charged battery and went for blast off I think it was about six turns of the key and hey presto the engine sprang into life. One very happy and satisfied Maxheadroom.
I had two nuts left over and thought ah that was the two I replaced holding the air pipe to engine as I couldn’t find them in the first place.

I just took my time and if in doubt log on here or lush projects etc.

I hope this is of help…..

any questions please do not hesitate to contact mikeonb4c :lol: :lol: :lol: :lol:
:lol: :lol: :lol: I wish. But I suspect my back would have gone before I even got the engine covers open to start the job :(

I'm amazed you didn't need to check the valve clearances as I'd have thought they were completely disturbed by the dismantle and rebuild :?

Also, out of interest, how did you turn the engine over (socket and arm on crankshaft nut maybe?) and wasn't it v. hard turning it over with the glowplugs etc. in place and causing high compression?
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maxheadroom
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Re: Block Decking

Post by maxheadroom » Tue Mar 30, 2010 1:42 pm

mikeonb4c wrote:v :lol: :lol: :lol: I wish. But I suspect my back would have gone before I even got the engine covers open to start the job :(

Yes my back killed me after :D

I'm amazed you didn't need to check the valve clearances as I'd have thought they were completely disturbed by the dismantle and rebuild :?

I bought a head all build from the club shop :D

Also, out of interest, how did you turn the engine over (socket and arm on crankshaft nut maybe?) and wasn't it v. hard turning it over with the glowplugs etc. in place and causing high compression?
used two of the old head bolts in the two holes in the pully and used a tommy bar, didn't need to tutn it with the head on to set TDC :D
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ADAMD
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Re: Block Decking

Post by ADAMD » Tue Mar 30, 2010 4:36 pm

I now have all the info I need to set the valves, But I am missing some basic knowledge!!
Which is which valve,
Is this correct?

valves (from cambelt end)
1 3. 4 6. 7 9. 10 12. inlets
2. 5. 8. 11. exhaust


Thanks
Adam
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Simon Jones
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Re: Block Decking

Post by Simon Jones » Tue Mar 30, 2010 9:00 pm

I don't have the manual to hand, but you could simply check by looking the in the inlet & exhaust ports.
ADAMD
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Re: Block Decking

Post by ADAMD » Wed Mar 31, 2010 9:42 am

Simon, now that sounds like a sensible idea.

Can I just check this, as I dismantled I set the timing marks so they all lined up as so.
Image

Image


Does this represent TDC on No.1 Cylinder?

Shiny new head arrived yesterday, sticker on side say to wash down before use, has anyone done this?

Cam is already fitted, can head be fitted with cam in situ?

Thanks

Adam
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