Valve Lapping Tool

[jbertrand]

I am looking for a new valve lapping tool with suction on it, and different size tips. Does anyone know where I can get one.

Picture is what I am looking for.

Thanks for any help.

 

[bob15]

ebay.....type in "valve lapping tool" and 84 auctions come up

 

[Wamsutta]

They got those at NAPA, but you'll probably have to go to a distribution center. Run a search under KD Tools 501 and 505.

 

[WBrowniv]

O'Reilly Auto Parts carry them last I looked.

 

[MechanicNamedJohn]

Most all the auto parts stores sell them... You can also flip the head over and just use a piece of tight fitting vacuum hose on the valve stem.

 

[senlow]

That is a Wood's Powr-Grip V1275. I would try Goodson. Here's the URL: http://www.goodson.com/ or, you could just call Wood's for a dealer list.

 

[J.A.Varela]

Hazet

 

[Dust Devil]

Whatever you do dont waste your money on the "performance tool" one at o'rilly. Bought one today and it is a total *************. My other one disappeared, I think one of the other guys took it when he left.

Gonna hit the truck when he gets back from the tradeshow.

Friggen weird I buy one today and then a thread about tonight. Kinda obscure tool IMO not many going to use one.

 

[Dust Devil]

Most all the auto parts stores sell them... You can also flip the head over and just use a piece of tight fitting vacuum hose on the valve stem.

Brilliant. Just put a piece of fuel line on and spin with fingers. AWESOME idea. Thanks.

 

[kiatech]

Chuck'er in the drill and pull

 

[Packard V8]

Most of the real-deal performance engine builders won't let valve-lapping compound anywhere near their valve jobs. I know I haven't used it since I learned better and that was many a year ago.

jack vines

 

[michael murder]

Most of the real-deal performance engine builders won't let valve-lapping compound anywhere near their valve jobs. I know I haven't used it since I learned better and that was many a year ago.

jack vines

What do you do instead of using valve lapping compound?

 

[Dust Devil]

The high revving/high compression engines (13:1 comp, >10k redline)I work on daily get a light lapping unless they are getting Ti valves.

If I am assembling a new head with new valves I might skip the lap but IMO a light lapping is going to get you a better seal and longer life.

 

[Packard V8]

The explanation I was given is:

1. If the valves and seats are correctly ground on high quality machines, the finish is as good as it's going to get. We take valves out of the box and seat them directly in the new guide and seat. We then pull a vacuum and 99% of the time it holds 30" and it's good to go. The 1% which don't hold full vacuum, we use marking dye to find the problem and usually it's the valve isn't concentric. A touch on the valve refacer and it is corrected.

2. It's almost impossible to remove all the lapping compound. Some remains in the pores of the valve and seat and continue to eat at the surfaces.

Your engine, your build, your decision. Just do the homework and see what the majority of the pros do. I decided lapping compound had no place in my valve jobs.

 

[Dust Devil]

I use fluid to check valve seat seal. Better than vacuum any day fluid tells the tale instantly.

My experience and my eyes also show me that a LIGHTLY hand lapped valve seat is a much finer sealing surface than a fresh CNC cut seat.

The key is lightly hand lapped. Not a 30 minute tweak out, a quick 30 second lap. It is the best method if you really are concerned with a proper seal. Period.

Also disagree on the on the impossibility of removing all the lapping compound.

 

[merbie]

^^ I agree with this iv just finished installing new valves in a v12 jaguar engine and I managed to remove the grinding paste


Sent from the sticks

 

[Dust Devil]

LOL... I don't envy you Merbie, that is a load of valves.

 

[merbie]

Haha you know my pain, you get to about 14 and feels like your arms are about to fall off


Sent from the sticks

 

[michael murder]

1. If the valves and seats are correctly ground on high quality machines, the finish is as good as it's going to get. We take valves out of the box and seat them directly in the new guide and seat. We then pull a vacuum and 99% of the time it holds 30" and it's good to go. The 1% which don't hold full vacuum, we use marking dye to find the problem and usually it's the valve isn't concentric. A touch on the valve refacer and it is corrected.

2. It's almost impossible to remove all the lapping compound. Some remains in the pores of the valve and seat and continue to eat at the surfaces.

Thanks for the info!

 

[slip knot]

Chuck'er in the drill and pull

X2

 

[CJM8515]

X3 on the drill method.