What's the best way to determine if you have enough tension on timing belt?

 

A Gates 99107 Tension Gauge is useful.

Generally, 1/2" of deflection is acceptable. If you followed the correct sequence in putting your belt on, you don't have anything to worry about.

B/D/H/F
1) Set timing, tighten tensioner bolt.
2) Loosen tensioner bolt 180.
3) Rotate crank pulley counter clockwise to give you a (3) tooth offset in between your cams.
4) Tighten tensioner bolt to 40 ft/lb.

 

Yes I followed sequence in manual but my block and head have been milled so deck height is lower, won't this effect the tension on belt?

 

How much was taken off of each?

Theoretically yes, but you won't have it be an issue unless we are talking about a drastic amount off each.

 

Depends on the thickness of the headgasket. Some people use a thicker gasket to compensate for resurfacing. I would prefer this on a stocker, as it is the cheaper option.

Any time you remove material from the head or block you should degree the engine and use an adjustable cam gear to advance the cam back to stock. Reducing the distance between the cam and crank results in belt slack, which retards cam timing. This cannot be fixed on the tension side without mechanically compensating for the slack.

 

There is about .0030" taken off between head and block. I'm fitting skunk cams so they will be dialled in.