Transmission noise

General chat about the car goes in here.
Post Reply
pauljdav

Transmission noise

Post by pauljdav »

The tranny makes a bit of noise when stopped , in neutral with the clutch up. It makes the same noise when coasting with the clutch pressed in while it is in gear.

I think it may be one of the front bearings.

Is this type of noise common on these cars? Is it something to be concerned about? And is it easy to repair?
I have never taken a tranny apart before but I am always willing.

Paul
1978 spider
So Cal Mark

Re: Transmission noise

Post by So Cal Mark »

noise in neutral with the clutch pedal up is usually the caged needle bearing between the input and output shafts. Replacing it requires disassembling the tranny. You might try draining the tranny and refilling it with a synthetic 40w motor oil.
KRegester

Re: Transmission noise

Post by KRegester »

I thought synthetic convential oil was bad for our synchros?
Not challenging what you said, just confused..

-=Ken=-
rlux4
Patron 2022
Patron 2022
Posts: 4211
Joined: Thu Jan 10, 2008 8:32 pm
Your car is a: 1982 2000 Spider
Location: Granite Falls, Wa

Re: Transmission noise

Post by rlux4 »

You're main concern will be the GL1 rating. It doesn't have the additives that are corrosive to the soft metals. There are sythetics that have the GL1 rating, Amsoil 20w50 Motorcycle oil for instance. For some reason or other motor oils and gear lubes have a different viscocity rating system. 20/50 motor oil is equivalent to 90w gear lube. 40W motor oil falls in there.
Ron
Ron Luxmore
rlux2n2@gmail.com
'82 2000 Spider: after 26 years between Spiders.
KRegester

Re: Transmission noise

Post by KRegester »

rlux4 wrote:You're main concern will be the GL1 rating. It doesn't have the additives that are corrosive to the soft metals. There are sythetics that have the GL1 rating, Amsoil 20w50 Motorcycle oil for instance. For some reason or other motor oils and gear lubes have a different viscocity rating system. 20/50 motor oil is equivalent to 90w gear lube. 40W motor oil falls in there.
Ron
Ahhh <slaps forehead> Makes sense, Thanks !!!!!!!!
User avatar
manoa matt
Posts: 3442
Joined: Thu Oct 26, 2006 4:28 pm
Your car is a: 1978 Fiat 124 Spider 1800
Location: Honolulu, Hawaii

Re: Transmission noise

Post by manoa matt »

I'd first check the pedal adjustment and throw out bearing. If the pedal is adjusted too tight the throwout bearing will be in constant contact with the clutch and could fail prematurely.

Matt
Post Reply