carreras

iTrader: (7)

Ive had this problem for 6 months, my car is a 98 ss that was 6speed but i converted it to a4 and was shifting fine till i put my stall in. Since that day my tranny slips when i floor it, it just over revs in every gear. I bought the converter used off this site, its a yank 3500sy. Could it be the converter's no good, or i need to retune my car? Any feedback would help, thanks

performabuilt

iTrader: (25)

Well its very unlikley its been slipping and still goes for 6 months , most likley you just dont have the tune right for the converter you are running,The over reving is you engine hitting the rev limiter

bjamick

iTrader: (31)

the tc might need to be sent to yank to be gone through and re stalled. thats y im iffy bout buying TC's used.

performabuilt

iTrader: (25)

true buying a used converter is and iffy game since converters are built to a specific application

jimmyblue

iTrader: (11)

The SY3500 is a very low STR converter, meaning two things.
One, you will have -less- "kick" than a stocker (1.6 vs stock
1.8:1 torque multiplication). Two, the converter will be "loose"
or stretch a lot in RPM with torque.

This is not a snap-your-neck, drag launch converter. Its claim
to fame is super high efficiency and a fairly broad region of
torque multiplication (albeit low to start, it continues well out
into the higher RPM). It's more of a road race style.

I think you're just not happy with the soft coupling inherent
to this design.

See this:

http://www.converter.cc/tech_talk/tech_main.htm

carreras

iTrader: (7)

so what would be the best thing to do first, drop the tranny and send the converter to get inspected, or go get my car tuned? thanks for you alls replies