20 replies to this topic

[whistler]

What piston damper are you using in he HIF 44?
Ac

What do you mean by which piston damper? I'm using 3in1 oil or possibly 10w40 engine oil and a red spring in the dashpot, sorry for the vague answer. I put the carb on last year so I've forgotten.

I think there are different types of damper used in the HIF44 - there should be a number embossed on the black plastic cap.
 
And standard SU damper oil is straight 20 weight, the closest multigrade is 5W30. 3 in 1 is less viscous.

I think you'll find that 3 in 1 is 20 grade, the same as SU oil.

[Lt-SilverDragon]

I say again, what damper are you using?
Dampers are not matched.
Ac

Lzx1505 is what it says on the lid

[Ethel]

Pistons and dashpots can be matched, but they are interchangeable. It's more getting the clearance within tolerance to get an acceptable air seal than mating surfaces. Hif's would be less fussy as they ride on ball bearings.

 

The final drive gearing and engine compression will affect engine breaking, as would binding brakes. Take advantage of AC's superior knowledge before chasing too many possibilities and going round in circles though.

[carbon]

 

 

 

What piston damper are you using in he HIF 44?
Ac

What do you mean by which piston damper? I'm using 3in1 oil or possibly 10w40 engine oil and a red spring in the dashpot, sorry for the vague answer. I put the carb on last year so I've forgotten.

 

I think there are different types of damper used in the HIF44 - there should be a number embossed on the black plastic cap.
 
And standard SU damper oil is straight 20 weight, the closest multigrade is 5W30. 3 in 1 is less viscous.

 

I think you'll find that 3 in 1 is 20 grade, the same as SU oil.

 

Whistler is right, genuine '3 in 1' oil is indeed 20 weight, according to their website: https://3inone.com/products/motor-oil/

Edited by carbon, 11 March 2018 - 07:15 PM.

[ACDodd]

Myth.

Ac

[page]

amethyst you wrote, i'm pretty sure that is your ignition map set up on this region . 

This is why with the richier AFR worked better. Play with it a little more.

George.