SR3 Gear Drive Troubles - Popping into 'neutral'

SR3 Gear Drive Troubles - Popping into 'neutral'

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Matt Graham

Original Poster:

73 posts

200 months

Sunday 4th July 2010
quotequote all
Experts,

Once again, I searched and found nothing, but apologize in advance if it's been discussed before.

At Mosport, near Toronto, today with the SR3 and had an issue with the Quaife gear drive unit constantly going into "neutral" (between fwd and reverse) resulting in no drive. First couple of times came to a stop on the side of the circuit, pushed the lever to engage fwd, and drove back to the pits. Tried disconnecting, then removing the reverse cable but the gear drive unit continued to "pop" into was is basically neutral. Finally tried to safety wire (somewhat loosely) the selector in forward, but once again the gear drive unit over came the safety wire and "popped" into neutral.

Anyone had this issue before? If so, how was it solved?

Perhaps the gear drive unit will have to come out and be serviced by Quaife. Anyone had this done? Any idea on cost and turn around time?

Thanks in advance.

-Matt

PS - This is in the car that's been converted to K8 spec. I'll update my post with the few things we've overcome putting a K8 in the car.

Matt Graham

Original Poster:

73 posts

200 months

Monday 5th July 2010
quotequote all
Update - Pulled the ratio change cover and found some metal filings. The entire unit is headed back for rebuild.

-Matt

Mydt9

156 posts

229 months

Monday 5th July 2010
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Hi Matt,

This happended to me with my old Sr3 and upon inspection it turned out to be front gear drive bearing that had become loose in its press seat within the diff casting causing sufficient movement for the gears to lose contact especially at high revs and under load.

Stripped it down, rebored bearing hole and new slighter larger O/D bearing fixed it. Hope its recoverable smash

Good luck,

Mydrian

Matt Graham

Original Poster:

73 posts

200 months

Tuesday 6th July 2010
quotequote all
Mydrian,

Sounds like something similar might have happened to this diff (some sort of high wear malady, anyway). It's getting sent back to Radical for inspection and rebuild.

-Matt