#EVOM LAP VALVES DRIVER#

Don't use a shop who gives you a run around on your heads, make sure they know what the heck they are doing and anyone that tells you a canfield head is bad or can be fixed does not belong doing heads. Must me doing something right as this year every engine I tested made power, even a stock set of Vortec's with just a 3 angle seat valve job with lapping and that car ran mid-11's. When I cut my valves and seats I always do a 45° on both and I do lap in all my valves and seats.

#EVOM LAP VALVES DRIVER#

While not bad for a daily driver it takes as much as 50K for the valves to fully seat in and it's awful for a performance head or any IMO. What is that you say? well it a 45° seat and a 46° valve angle. Here's what happens, you go to a machine shop and they perform a valve job on your heads, but they do a interference valve job. Also I have no prior experience so please bear with me Winter is coming and I have quite some things to be done on the engine along with rear window re-sealing. I researched a bit and I am not sure of what lapping compound roughness do I need to order.ĭo i need to do it in few steps from rough to fine?Ĭan I just order PERMATEX 80036 and only use that in one single step? Well this was told to me by a man deep in his 60s and I think he wanted me to learn something out of it, so why not! Then there is one shop who agreed to take them in but only after I try to fix them with lapping if of course valve or seat is not damaged- in this case I can take it to them directly. Other shops just said no due to Canfield not existing anymore (I am in EU, so I think the main issue is they do not have much experience with old SBCs and with Canfield gone they are not able to contact manufacturer for tech. One shop stated that the leak is not high enough to take it apart (I measured 17% and 10% if I remember correctly).

I tried to step in contact with some machine shops to take a look at my heads, as leakdown indicated leaking on 2 intake valves.

Evom lap valves