3.5 V8 Rebuild

Thor1950 · Nov 30, 2012

Mr Noisy said:
Always wondered about head blasting, do they shield the machined surfaces??

not with a soda blaster

Mr Noisy · Nov 30, 2012

And is soda blasting de rigeur for engine cleaning??

jamesmartin · Nov 30, 2012

Mr Noisy said:
Always wondered about head blasting, do they shield the machined surfaces??

we used to wet blast using glass beads doesnt etch or harm surface at all and brings up as new doesnt look blasted as dry and other media do

Mr Noisy · Nov 30, 2012

Fair play. One learns today

jamesmartin · Nov 30, 2012

ive still got a wet blaster but unfortunately its having the motor and pump fixed at a local engineering place and has been for the last couple of years

Mr Noisy · Nov 30, 2012

jamesmartin said:
ive still got a wet blaster but unfortunately its having the motor and pump fixed at a local engineering place and has been for the last couple of years

That sounds like our local engineering place

discomark10 · Dec 9, 2012

So.. had a go at soda blasting this weekend, turns out that the old man had a sand blaster attacment for the compressor and this is how it went.

https://www.youtube.com/watch?v=N98U-KP1fe8&feature=youtube_gdata_player

It woks well but water is a huge problem. As it got colder the more clumpy it was getting and less effective. Tool for good weather imo.
Oh also.. wear a mask and goggles because it goes absolutely everywhere! And tastes pretty foul.

Mr Noisy · Dec 9, 2012

Hmmm, not half bad!!

discomark10 · Dec 26, 2012

Finally got some time to work on the injin again, got the old cam bearings out using a long bit of threaded rod and various sized sockets.
Also I made the new oil pick-up for the chain.
After some pondering from myself, the old man and my mate Jon (my resident genius) we managed to come up with a new oil pick up using the oil that returns from 1 of the heads.
The idea of just drilling some holes would allow oil to pass through but only run down the front of the block which is useless; so using some silicone pipe we made a feed that goes directly on the chain (still needs trimming once the new bits are all in).

Mr Noisy · Dec 26, 2012

That's gonna be pretty awesome lubrication if it works good, hats off!

fett · Dec 26, 2012

is that soft solder?

discomark10 · Dec 26, 2012

fett said:
is that soft solder?

its just normal Shh (lead) solder

fett · Dec 26, 2012

I never trust that but its up to you

Mr Noisy · Dec 26, 2012

Lead solder is awesome stuff. Tbh lead is awesome stuff. That's why they banned it, all the good **** gets banned.

discomark10 · Dec 26, 2012

yea lead is good, the replacement stuf is utter ****e

fett · Dec 26, 2012

not sure how it performs in hot oil and vibration for long periods, still I am sure the brass will go well with your moving parts

discomark10 · Dec 26, 2012

fett said:
still I am sure the brass will go well with your moving parts

care to elaborate?

fett · Dec 26, 2012

I only looked at the picture quickly but isnt the soft solder attaching the whole set up to the mounting plate that is bolted to the engine?

I would be worried about it coming off and being eaten

Dr_evil · Dec 26, 2012

soft solder with hold up to a higher temp than the engine will reach, the solder is also good for a pull of about 2.5 tonnes last time we did testing on mild steel soldered together so should still be strong enough with brass

fett · Dec 26, 2012

yeah well we have no reason to doubt anything you say doc :doh:

3.5 V8 Rebuild

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