Small Snap ring write up with pics

nsxtcy85 · 6 February 2008

As some of you know Ive had trans problems for a while. Here is what I have found.

My replacement thanks to Phili (kyle)

Btw I already ripped this one open and all specs are decent and will go in for the summer race reason. Next fall I will replace the blocker (syncro rings)

I will write more when I have time.

RON98 · 6 February 2008

hows it feel to have your destiny in your hand :biggrin:

btw did you rebuild that bad boy? or just get another tranny?

nsxtcy85 · 6 February 2008

Rebuilding it but got another for the summer. The on thats in in right now (coming out this weekend) is getting a full cryo treatment. hopefully ready by next spring 09'

nis350 · 6 February 2008

nsxtcy85 said:
Rebuilding it but got another for the summer. The on thats in in right now (coming out this weekend) is getting a full cryo treatment. hopefully ready by next spring 09'

What is the mileage on the trans with broken snap ring?

Jett · 6 February 2008

Thanks for posting these pictures. They are worth more than a thousand words and are invaluable in clarifying exactly what to do about suspected snap-ring problems.

nsxtcy85 · 6 February 2008

nis350 said:
What is the mileage on the trans with broken snap ring?

Just after 100k miles.

nsxtcy85 · 6 February 2008

Jett said:
Thanks for posting these pictures. They are worth more than a thousand words and are invaluable in clarifying exactly what to do about suspected snap-ring problems.

awesome. Im glad I could help. Because before I did this for myself I felt that same way.

RON98 · 6 February 2008

nsxtcy85 said:
Just after 100k miles.

thats a whole lot of miles before it went. even honda's inperfections last 100K. :smile: yes we all know about the lones that last less :tongue:

nsxtcy85 · 6 February 2008

RON98 said:
thats a whole lot of miles before it went. even honda's inperfections last 100K. :smile: yes we all know about the lones that last less :tongue:

What pisses me off is that it was only having slight grind problems in 3rd at high rpm. Then I switch the the GM syncro mesh coctail and the thing self distructed. I have my own theory on what went down.

Miner · 7 February 2008

Probably coincidence, unless the new fluid convinced you to drive harder. My snap ring went out at around 75,000. Acura wouldn't good faith anything, and the San Antonio service shop gave me very little confidence they could actually rebuild the gearbox. I ended up pulling it out myself, opening up the case, cleaning the gears and replacing the snap ring. As pointed out, as the mileage increases, the snap ring can fail so I figured the money I would have spent on a new case to fix the snap ring range case was money better saved for a 6 speed conversion when it fails the second time.

I have gobs of photos similar to yours, including the gearbox with the housing removed. Perhapa a collection of snap ring repair photos for the DIYer.

Miner

RON98 · 7 February 2008

nsxtcy85 said:
What pisses me off is that it was only having slight grind problems in 3rd at high rpm. Then I switch the the GM syncro mesh coctail and the thing self distructed. I have my own theory on what went down.

how you figure?

GM SM accelerates syncro wear but not sure how it would blow out your snap ring.

definitly curious in your theories. :smile:

nigel · 8 February 2008

Why do you say G/M S/M fluid accelerates syncro wear when it reduces friction to allow the xmsn gears to mesh much easier? Thus smoother shifting, less notchiness!

Cheers
nigel

RON98 · 9 February 2008

fm increases friction between the worn syncros so that the gears can match speed faster.

the notch only comes in when the gears speed are not properly matched and in extreme cases we get the grind.

Try a mobil 1 synthetic engine oil with out any FM, your gears will be grinding all over the place. less wear on the syncros tho!

also FM enabled fluid is used lots for LSD. If the fluid is too slippery, the LSD will not lock and respond as fast.

counter intuative. :smile:

nigel · 9 February 2008

Cool, Now I see. I was thinking along the lines of it's inability to lock up and burn up/wear faster.
Thanks.

Cheers
nigel

Small Snap ring write up with pics

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