Howdy all,
Finally getting round to putting my motor back together and i have a question:
Thats how it used to look inside and to me it looks like there are seals around the rods.
Is how it looks now, as you can see those seals are MIA, I ordered an engine gasket/seal kit but it doesn't appear to have come with these seals. So what are they called etc?
Also has anyone ever used the copper head gaskets on a standard motor? Do i need to do anything special with them?
Thanks all in advance.
What gasket kit have you got? They should all have the six O'ring seals for the main case studs.
I always use german Elring and they are definately there, have plenty here if you want or maybe even separate O'rings if you want.
Copper head gaskets, the roundish section ones, are only used for the early non fresh air heater engine, 1200A and 36hp. They sit down the barrel from the surface that seals onto the head as a back up seal to prevent combustion gasses from ever getting into the heater system. Not used unless the head machining has accounted for them and you have the very ealy heater system ( not heater boxes).
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
THAT ENGINE LOOKS LIKE IT HAD A HARD LIFE very black inside
looks like you had the case faced and tunnel bored did u have the barell surfaces machined as well
I got it all done about 1.5 yrs ago now (time flys when your rebuilding a house :P) but yes i believe the barell surface was machined (its all shiney).
I went out and grabbed a new gasket set some german made set and they came with that.
If i get a few minutes tomorrow i will start putting it all together with a nice helping of aviation form a gasket and some decent cam lube, now is it worth using the cam lube on everything or should i only use it on the cam and gears then some decent oil on everything else.
Guys,
How important are the O rings.
Ive had shuffle pins machined into the case.
Do you normally not use O rings on these ones?
Or do you look to some sort of sealing nut on the outside of the case?
Cheers
Newt
It is as it is - If you didnt enjoy today, you've missed the opportunity.
With shuffle pins you can't use the O'rings. Always seal the nut and washer of the six M12 bolts on the outside of type 1 and type IV engines for extra sealing. In fact the type IV has no O'ring so this must be done anywho.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
Hi
Seeing as the case has been decked & faced your going to need some spacers to get the compression down again.
My memory is getting dim, its been almost 25 years since I worked in a VW shop, but there was head gasket that came out on 1700 - 2000 Type 4 motors that was a perfect fit over the base of stock 1300, 1500 & 1600 barrels.
When you buy a 1700 - 2000 Type 4 gasket kit it usually comes with extra gaskets that are not needed, so most VW shops will have box full of these gaskets that have not been used from the kit.
Steve
Matt,
Not to sound too ignorant. Are we talking about some sort of sealing nut or a dollup of aviation cement under the washer?
Cheers
Newt
It is as it is - If you didnt enjoy today, you've missed the opportunity.
The VW sealing nut is not to be used. It has a step that actually distorts when used the factory way (seal to washer) which over time allows the clamp force to reduce as it deforms the nut and the washer. These are best replaced but can be used the other way around. As for sealer, every engine builder has their preference, I've seen aviation goo here to good results, but I use a heat resistant RTV Silicone ONLY under the washer for these 6 nuts/bolts and the lower head nuts in the tappet recess. Important to have a perfectly dry base and washer, fit the goop onto the washer carefully, then fit washer then lube the threads with a moly lube and importantly between the washer and nut, then increase torque in the recommended manner. The lube both on the threads and between nut and washer is most important. This can effect the clamp force by up to 700%. Also preparing all the threads with a tap and die before assembly even starts. Hope this helps.
Matt Berry Motorsports...air cooled advice, repairs and mods Ph 0408 704 662
OFF-ROAD,CIRCUIT,DRAG,STREET,ENDURANCE
Matt
Is good - cheers.
Newt
It is as it is - If you didnt enjoy today, you've missed the opportunity.
