Q's on ASPRacing & FFP UD pulleys

[gpchris]

1. Anybody know the size of the FFP UD pulley??

2. Anybody try the ASPR UD pulley yet?

[toms92gp]

I don't know about diameter, I know its a good bit smaller and a hell of alot lighter. I thinks its suppose to be a 23 or 25% underdrive. If it wasn't so hard to get to I would measure it for you.

[gpchris]

I thought the ffp was 18% underdriven..?

[Dave96z34]

i dont no its exact size but its a little biger then 5.5"

[dohcfiend]

if i remember i'll measure it be4 i pull it to be shipped to it's buyer.

[toms92gp]

I thought the ffp was 18% underdriven..?

you maybe right. I had a paper printed off of there website from when I bought mine but it didn't say anything about size or weight on the paper.

[series8217]

Does anyone make an actual aftermarket damper with a smaller pulley or are they all solid aluminum replacements for the harmonic damper? I'm all for reducing rotating mass but replacing the harmonic damper with a non-damping solid piece is not good for crankshaft and rod bearing durability..

[gpchris]

On a dohc you just replace the pulley not the entire harmonic damper..

[series8217]

Pics?

If I recall correctly the FFP pulley completely replaced the damper. Maybe I'm thinking of the 2.8/3.1/3x000 ones..

[gpchris]

all UD pulleys on the dohc are just pulleys not the entire damper. 3x00s have the damper/pulley all in one.

[toms92gp]

Yeah on the 3.4 dohc the pulley and damper are 2 seperate peices bolted together.

[torq455]

yeah, the FFP replaced the damper and pulley. it is %18 under driven the stock pulley is all integrated.

[gpchris]

yeah, the FFP replaced the damper and pulley.

No. It didnt. Only on 3x00s

[Identity Crisis]

It says on the ASP site that it is a 20% and if you look at the pic it clearly shows that it bolts to the balancer with three bolts.

[dohcfiend]

they are right you know. i have had the 94+ pulley be4 and i have the 91-93 ffp pulley on my dohc, it is just the pulley.