Stoopid question.

Trigger_Andy · Post by **Trigger_Andy** » Thu Jul 26, 07 4:27 pm

Cheers guy's. But the Duster is that slow I dont think I'll have that kinda gearing to be honest.

Will be interesting to see what she does have though.

Pete · Post by **Pete** » Thu Jul 26, 07 4:30 pm

My guess is 2.76:1....

Trigger_Andy · Post by **Trigger_Andy** » Thu Jul 26, 07 4:44 pm

Thats what I'm thinking too. It's just got a wee 2 bbl on. Saying that, its a replacement engine. It does have headers and a H beam exhaust system on with funny silencers that you can adjust to alter the tone??? I'm gonna head down now and see.

Trigger_Andy · Post by **Trigger_Andy** » Thu Jul 26, 07 6:16 pm

Well its just a standard 8 1/4 diff and I get two full rotations of the prop to about 1 1/4 on the wheel. So disapointing but somewhat expected really. So there's another item to add to the list in the future! On the plus side I should have my 340 engine heading over from Miami fairly soon. It need's bored .60th over or resleeving on one of the bores but I got it for a good price. I know of a good engine builder's here in Scotland who regulary build up American engines willing to carry out the work. The engine could end up being a Lemon I guess but the shop I bought it off of seamed fairly genuine and is going well outta his way in assisting me to ship it over the the UK.

Guy · Post by **Guy** » Thu Jul 26, 07 7:45 pm

Trigger_Andy wrote:It need's bored .60th over or resleeving on one of the bores but I got it for a good price.

Hopefully you dont need to go to +60 as thats streching it a bit far for a 340,

Let me know as I have a set of +.30th forged pistons and rings(chrome moly) for a 340 all brand new in a box and looking for a new home.

J Clark · Post by **J Clark** » Thu Jul 26, 07 8:14 pm

Trigger_Andy wrote:Well its just a standard 8 1/4 diff and I get two full rotations of the prop to about 1 1/4 on the wheel.

You might want to check those figures! If you're saying that you get 2 turns of the prop to 1 1/4 turns (1.25) of the road wheel, then that would be a 1.6 ratio???

If you had both wheels jacked up and you don't have a suregrip then the other wheel probably wasn't turning at the same rate as the wheel you were turning. You need to look across to the other wheel to check they turn together at the same rate.

Trigger_Andy · Post by **Trigger_Andy** » Thu Jul 26, 07 8:14 pm

Cheers Guy,
I'll see what the machine shop makes of the deep score in the bore. Hopefully .30th will get it but I doubt it. If I get that bore resleeved then I will be going .30th. I have seen quite a few companys selling .60th 340 pistons. If they sell them it must be do-able surley?

Kev · Post by **Kev** » Thu Jul 26, 07 8:28 pm

J Clark wrote:
Trigger_Andy wrote:Well its just a standard 8 1/4 diff and I get two full rotations of the prop to about 1 1/4 on the wheel.
You might want to check those figures! If you're saying that you get 2 turns of the prop to 1 1/4 turns (1.25) of the road wheel, then that would be a 1.6 ratio??? If you had both wheels jacked up and you don't have a suregrip then the other wheel probably wasn't turning at the same rate as the wheel you were turning. You need to look across to the other wheel to check they turn together at the same rate.

Rolling the car on the ground for one revolution is the best way to measure an open diff.....

J Clark · Post by **J Clark** » Thu Jul 26, 07 8:56 pm

Cheers Kev, I didn't really finish that off properly, i.e looks like Andy has an open diff!

Trigger_Andy · Post by **Trigger_Andy** » Thu Jul 26, 07 11:34 pm

Thanks again guy's. When I'm down next I'll have a check. Cant get near the Duster just now as I am laying a solid Oak flooring in my open plan Kitchen/Dinning Room and Living Room. With Floor Lights

Its taken we three weeks and I still have the hall to do yeh!

Looks great though!