piston to valve clearance

[karl.]

Does anybody know what the clearance is on a standard 5efe engine with a 0.5mm head gasket? Even 4efte with a standard gasket would be fine

I'm hopeing to build a high compression 5e engine but I want to keep it non interference. I will also be using high lift cams so I will need to add a extra 1mm or so to the valve opening.

Any info is appreciated.

[5e colin]

fyi i buillt a 5efe with gen1 pistons with dec scimmed and head scimmed and o.5mm gasket from toyota and didnt touch

[karl.]

That's a good start Colin thanks, I will be skimming the deck along with the head and using wiesco 10cc pistons so going by that I shouldn't have any problems

[Phil]

4efte

0.6trd

Block decked

Head skimmed

Stock cams

10cc dished wiesco

Interference

Edited October 28, 2014 by Phil

[Phil]

Check this out. Especially teds comment

http://www.toyotagtturbo.com/forums/showthread.php?97661-Non-interference-engine-proof&highlight=Interference+valve+Weejohn

And this, note texx contribution

http://www.toyotagtturbo.com/forums/showthread.php?101103-what-s-minimum-space-between-piston-and-head&highlight=Interference+valve+Weejohn

Phil

[Sudden]

http://instagram.com/p/q0Ks-oN9J7/

5e-fe, 4e-f pistons, 0.6mm dis head gasket, skimmed head, 5efhe cams. Plenty of clearence.

Intake: 0.118in / 3mm

Exhaust: 0.196in / 5mm

Interesting to note. The 5e-fhe pistons have a larger valve relief than all the others.

Edited October 29, 2014 by Sudden

[karl.]

http://instagram.com/p/q0Ks-oN9J7/

5e-fe, 4e-f pistons, 0.6mm dis head gasket, skimmed head, 5efhe cams. Plenty of clearence.

Intake: 0.118in / 3mm

Exhaust: 0.196in / 5mm

Interesting to note. The 5e-fhe pistons have a larger valve relief than all the others.

Thanks very much for that, it helps a lot.

Here's the picture for anybody that can't see it.

Edited October 30, 2014 by karl.