vibration at 120 at a lost why

[Unholy707]

I thought I read somewhere you were running the 3.70's.....so you know from experience instead of hear say I like that...so go with 3.09?

I love it in the street, but I’ve never had a 3.09, so I really can’t compare it. I think if I had the 315/55 tires (1” taller) over the 315/50 it would be better. But yeah, I run 9.8 spinning off the line and still cut a 1.5 60’

 

[Unholy707]

That’s around where my 1/8th is eith a bad 60’ I’ll have to check I do 1/4 mile because I like to party

 

[rookerrobert]

I love it in the street, but I’ve never had a 3.09, so I really can’t compare it. I think if I had the 315/55 tires (1” taller) over the 315/50 it would be better. But yeah, I run 9.8 spinning off the line and still cut a 1.5 60’

yeah I understand that....I'm just thinking over my option's with the little vibration I think a carbon fiber shaft and 3.09 diff. would be a start with the problem

 

[Unholy707]

6.40 @111.5….6.46 @109.7…. 6.43 @ 109.15… 6.40 @ 111.03….. lol

 

[Unholy707]

1.57 60’ was my 9.8 pass, 1.52….1.55….1.50

 

[rookerrobert]

yep

6.40 @111.5….6.46 @109.7…. 6.43 @ 109.15… 6.40 @ 111.03….. lol

your spinning

 

[Unholy707]

yeah I understand that....I'm just thinking over my option's with the little vibration I think a carbon fiber shaft and 3.09 diff. would be a start with the problem

Do you have a stock driveshaft in the car?

 

[rookerrobert]

Do you have a stock driveshaft in the car?

no aluminum shaft... I could see some small scratch rings around the shaft almost where the exhaust was in the rear about 3/4 down the shaft but for the life of me I dont see how it could hitting that far away from the exhaust and not come out

 

[Unholy707]

no aluminum shaft

That’s your problem it’s junk get rid of it. My 4” aluminum dss one went so far out of balance it rattled the fillings out of my teeth and happened out of nowhere. Put a Redeye driveshaft in and it’s smooth as butter

 

[Unholy707]

These cars need a 2 piece driveshaft. sounds like you’re making around the same power as me (close to 900 at the wheels on e85). Redeye driveshaft will handle that without breaking a sweat. I have over a dozen passes on it

 

[rookerrobert]

These cars need a 2 piece driveshaft. sounds like you’re making around the same power as me (close to 900 at the wheels on e85). Redeye driveshaft will handle that without breaking a sweat. I have over a dozen passes on it

very interesting I'll sure check on that

 

[Unholy707]

Problem is definitely your aluminum driveshaft. Been there and cursed , never again

 

[Unholy707]

Just do a search for dss driveshaft vibration, you’ll find dozens of posts. It’s a real common issue with them.

 

[rookerrobert]

I looked it up the redeye shaft is actually a little less more than the carbon fiber and do like the idea of it being a double shaft

 

[Unholy707]

I got mine for a steal had to drive a bit for it though ha. If you can find a take off for sale I’d go that route

 

[rookerrobert]

I got mine for a steal had to drive a bit for it though ha. If you can find a take off for sale I’d go that route

I been looking buy haven't found one yet if I do I will buy it....if you hear or see of one help a guy out....lol if not I'm going to it new but I will drive to get it also.I found 2 place's that have them 1 is 4.5 hours away the other 6hrs. but it beats 350 shipping

 

[Unholy707]

I been looking buy haven't found one yet if I do I will buy it....if you hear or see of one help a guy out....lol if not I'm going to it new but I will drive to get it also.I found 2 place's that have them 1 is 4.5 hours away the other 6hrs. but it beats 350 shipping

Yeah I drove through 4 states but got it for $650 so lol, was well worth the 2 day weekend trip

 

[rookerrobert]

Yeah I drove through 4 states but got it for $650 so lol, was well worth the 2 day weekend trip

lol....yes it was I would most likely do the same.....I have been looking but nothing yet I have found several new but there's no way I could get them before friday and install.

 

[GNBRETT]

Ur rear tires are out of alignment.

 

[rookerrobert]

Ur rear tires are out of alignment.

anything is possible....but I used my toe end plates and just checked and they checked ok. I know thats just rough check but still