August 16, 2010 at 1:55 pm #233082GaryParticipant
Bought 68 kit has sit for 8 yrs got it running but pretty good oil leak at #2 pushrod tube think maybe seals has hardened and started leaking ? any fixes with out pulling head? runs good but leaks oilAugust 16, 2010 at 2:36 pm #241940Larry MurphyParticipant
Gary, Search AIR COOLED VW on the internet. They have spring loaded tubes that they say will allow the replacement without the removal of the head. About $12.00 each ,also available in sets.
I have no experience with this product but it may solve your problem.August 16, 2010 at 4:37 pm #241941GaryParticipant
Thanks for the info will give it a try anxious to start driving this little jewel
GaryAugust 17, 2010 at 11:55 am #241942William J CollinsParticipant
don’t forget in order to install the spring loaded tube you have to remove
valve cover ,loosen and remove tappet and remove the pushrod ..then
remove the old tube ..replace with new tube and replace pushrod etc..and
then adjust valve clearance…ummm did I miss anythingAugust 18, 2010 at 12:40 am #241943Paul MossbergKeymaster
I know guys that won’t touch the spring loaded tubes because they think they won’t seal right. I know other guys that use them all the time with no problems.
That said, we know what the VW engineers used. If you want to stay with stock tubes, it really is not that bad a job to change them.
To replace the stock tubes, you don’t have to actually pull the heads. You do need to loosen them and pull them back about one inch.
Remove the valve cover. remove the rocker arm nuts (they are 13mm) and the wave washers. Wiggle the rocker arm assembly and slide out the push rods. Keep them in order. You want to replace them in the same positions.
Remove the head bolts. With a rubber mallet, GENTLY tap on the head fins to release it from the cylinder barrel. Wiggle (lots of wiggling going on here) the head back one inch and the tubes will fall out. Replace the tubes, with new rubber seals. Slide the head back down to mate with the cylinder barrels. Bolt the head back, torque the bolts to 17 – 20 foot pounds.
Slide the rods back into the tubes in the same position they came from! They will naturally rest on the cam. Slide the rocker arm assembly onto the head studs.As you do, tilt the rocker arms’ cups so you can set the push rod ends into the cups. CONFIRM this step! They need to be centered in the cups, not pressing against the lip or edge.Tighten the 13mm rocker arm assembly bolts. And check those rod ends again! Check the valve adjustment. But it is likely you will have the valve adjustment spot on where it was before you disassembled it.
Should be less than an hour for each side.
Former Owner of a 1981 Classic Roadsters Ltd. Duchess (VW)
2005 Intermeccanica Roadster
If you own a TDr and are not in the Registry, please go to https://tdreplica.com/forums/topic/mg-td-replica-registry/ and register (you need to copy and paste the link)August 18, 2010 at 10:39 am #241944Mark HendricksonParticipant
This may help too?August 19, 2010 at 2:22 pm #241945chuck schmitParticipant
Does anyone know if you can replace the head gaskets when you slide (wiggle) the head back that inch or so? I’ve had limited success reusing head gaskets. Does VW use copper gaskets or any at all?
ChuckAugust 20, 2010 at 10:45 am #241946Mark HendricksonParticipant
Stock VW engines DO NOT have head gaskets.
IMHO…never reuse a head gasket
Invest in the Robert Bentley publishers “Red Book” or “Blue Book” for a great air-cooled VW manual.
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