40 series torque converter

[aham2003]

I have seen some of the driven clutches on 2 different ways. Some with the spring side facing away from the engine and some with it flipped around with the spring side toward the engine.

My question is, are there different springs in some of them? A reverse wound spring? My driven has a red spring on it. Does it need to face toward or away from the engine? Thanks in advance.

 

[HONEYBADGERFTW]

Outboard/inboard driven units have springs loaded differently (clockwise/counterclockwise) and I think that you order springs accordingly. Color codes are for spring stiffness (RPM range/engagement) if I’m not mistaken.

 

[Joe-405]

Yellow spring is the reverse one............

Genuine Comet Reverse-Wound Spring. Allows 40/44 Driven Pulleys to be mounted with the spring and movable sheave Outboard - tension spring facing away from the engine.

 

[KartFab]

having a red spring orientation is better in my opinion. I cant really back it up as to why, but I like the red spring (facing engine). the sheaves on the drive and driven open in the same direction.

Just seems like the yellow spring (facing out away from engine) puts a lot of side load on the belt when fully engaged. looks kinda wonky.

Either way works though.

 

[itsid]

THAT!

red spring( INBOARD mount) is how the series 40 is designed to run...
the reverse wound yellow spring is a tradeoff.
the driven (the part you flip) is to be mounted in a floating manner on the jackshaft in order to allow for lateral movement (7/8" IIRC allowance) to compensate for the otherwise crooked belt.
or rather for it to realign the sheaves.

That's the reason I do not like the GPS backplate.. that does not allow the sheaves to realign,
thus the belt runs crooked at speed and is is more likely to wear prematurely.

But just as Grant said: either way works.. and with a floating driven (note: the driver MUST NOT float!!) there isn't even much of a drawback to talk about
(minor wear on the jackshaft and added mainenance for making sure it floats clean and smoothly)
a fixed driven however causes accelerated wear on the belt.

whatever you are most comfortable with will do.
(usual least maintenance inboard, or outboard with added maintenance or added belt costs)

'sid

 

[aham2003]

Great info. So the driven is supposed to float? I wasn't aware of that. I am finishing up the kart this weekend and I was going to put 2 lock collars on either side of it. Glad I asked. Thanks guys!

 

[itsid]

Great info. So the driven is supposed to float? I wasn't aware of that. I am finishing up the kart this weekend and I was going to put 2 lock collars on either side of it. Glad I asked. Thanks guys!

ONLY
if you outboard mount the driven!
(i.e. spring facing away from the engine)
otherwise the driven is to be installed aligned and non floating.

'sid