3.6 Deck Heights

[earossi]

I'm in the process of rebuilding my 3.6 motor. I'm at the point of determining the deck heights of each piston. In so doing, I have determined that my deck heights are in the range of 1.10 to 1.2 mm. I used a dial indicator to determine TDC on each piston, and then used a caliper to determine the deck heights. I took four readings on each piston at the 12, 3, 6, and 9 o'clock positions on each piston. In general, the deck heights were in a rather narrow band,between about 1.1 to 1.2 mm. Wayne suggests that 1.25 to 1.50 mm is the acceptable range for smaller engines. Lacking any specs on what is acceptable for a 3.6 motor, am I OK with this clearance? And, what are my options if this clearance is insufficient?

[Steve@Rennsport]

Hi Ernie,

You are good to go.

I like to see 1mm (.040) deck height as anything over 1.3mm can make an engine more prone to detonate.

Hope this helps,

[earossi]

Originally Posted by Steve@Rennsport

Hi Ernie,

You are good to go.

I like to see 1mm (.040) deck height as anything over 1.3mm can make an engine more prone to detonate.

Hope this helps,

Thanks Steve. Sounds like I am OK then. I'll start to assemble the heads and cam towers this weekend. Hope to have this motor done in the next two months! Thanks for all your help.