Engine making tapping noise...

[dub be good to me]

Just completed my first engine conversion to a k-jet + 5spd (big thanks to stu & loon for helping my out), but engine is making tapping noise (worse with acceleration).

2 questions:
My guess is its the tappets or hydraulic lifters, is this right?
If it is the tappets or lifters, whats the easiest fix? (do I need to replace all 8 or can they be repaired/refurbished etc..)

[dub be good to me]

Found link to method of reconditioning tappets
http://www.clubgti.com/forum/showthr...hlight=tappets

(gotta start searching properly before I post )

Still, I'm not sure if it is the tappets etc. thoughts or experience appreciated!

[Jarred]

I think I'd would be a hydro lifter head. Which means the lifters would be at fault.

AFAIK it's a replacement job. I don't know how to do em, but I do need to get them done, or do them on my Audi. Also need a rocker cover gasket and cam seal as well as the lifters.

[dub be good to me]

Ok, I've done some more research.

Wikipedia has a nice little explanation of how lifters work:
http://en.wikipedia.org/wiki/Hydraulic_lifters

I'm pretty confident the noise is caused by a blockage in the oil galley hole (that allows fuel in and out of the tappet) or maybe a busted tappet piston spring. Either way, I'm diving into it this Sunday to clean it up, and replace if necessary.

Jarred - I'll keep you posted as to how I go.

What's the cheapest place to get a new tappet?

[roccodingo]

Rebuilding them is still hit and miss ( tried and tested) i managed to get a set of 8 from a UK e bay seller for $65 + freight.

e bay.co.uk, seller name is tierod 69 there down in maidstone kent. Good folks too.

[dub be good to me]

Rebuilding them is still hit and miss ( tried and tested) i managed to get a set of 8 from a UK e bay seller for $65 + freight.

e bay.co.uk, seller name is tierod 69 there down in maidstone kent. Good folks too.

I gave it a go.. but all miss and no hit! I couldn't even get the damn piston out! The best I could do was make sure all the oil galley holes (in tappet and in head) were clear and then submerge them in oil to release any trapped air (of which there was heaps).
Unfortunately, this made no difference. So I guess I'm up for some new tappets..
Is there anything else I should check before I buy some new ones (p.s - couldn't find 'tierod 69' on ebay.co.uk)?

Also, since putting it all back the engine is making a whirring noise. Could this be an over tightened cam belt?

[Jarred]

I had a whining noise once, which was an over tightened cam belt. sounded a bit like a supercharger actually.

Possibly the problem, if it doesn't make any metallic kinda of noises. [if that makes sense]

[roccodingo]

My fault, there's no space in the name..

http://cgi.ebay.co.uk/VW-GOLF-MK2-MK...1%7C240%3A1318

Give them a ring.

0011 44 1622 677662 or 0011 44 1622 685308.

[Golf Loon]

Are you sure its tapping, and not pinging.

Pinging is caused by timing issues and can be cured by adjusting the dissy.

Tappets make a sharp rapping noise and usually quiet if you hold the revs steady at 3000rpm.

[evorobin]

Tappets are usually noisy when cold and quieten down or mine did. Had them done under warranty on the VEGA 8v donk.