Direct drive 5 speed

Engine, Transmission and related drivetrain.
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bertvorgon
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Joined: 04 Aug 2003 20:45
Location: White Rock, B.C. Canada

Re: Direct drive 5 speed

Post by bertvorgon »

Mine is NOT a direct drive, as I needed top speed also, I have the .864(5) overdrive. With my rear gearing, as most of you know, that lets me pull some serious top speed in 5th.

I have the steel syncros of course, which you can "feel" as you pull the next gear, but, that being said, it still shifts very smoothly...and I am just used to the damn thing after so many years.

It is very noisy though, which I must admit I wish it was a bit quieter. Once I am in 5th, and under load over4,000 rpm, it seems just fine.
"Racing makes heroin addiction look like a vague wish for something salty" - Peter Egan

Keith Law
1973 2 Door Slalom/hill climb/road race / canyon carver /Giant Killer 510
1971 Vintage 13' BOLER trailer
datzenmike
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Location: Van. Isle.

Re: Direct drive 5 speed

Post by datzenmike »

FS5C71A then?

Option 1
1st - 2.678, 2nd - 1.704, 3rd - 1.262, 4th - 1.00, 5th - 0.852, Rev - 2.922

Option 2
1st - 1.858, 2nd - 1.388, 3rd - 1.217, 4th - 1.00, 5th - 0.852, Rev - 2.922

Option 3
1st - 2.554, 2nd - 1.758, 3rd - 1.271, 4th - 1.00, 5th - 0.850, Rev - 2.922

Original Equipment ( S30, HS30, PS30 etc )
1st - 2.957, 2nd - 1.858, 3rd - 1.311, 4th - 1.00, 5th - 0.852, Rev - 2.922
"Nissan 'shit the bed' when they made these, plain and simple." McShagger510 on flattop SUs
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Baz
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Location: Lonsdale South OZ

Re: Direct drive 5 speed

Post by Baz »

Are you guys aware that it is not a difficult conversion to swap SR20 internals into L series boxes
and vice verca.
This makes it possible to use OS giken close ratio gear sets for the SR.
Unfortunatly they are OD sets only.
A few ratios to choose from. first 3 gears or full set depending on budget & requirements.
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bertvorgon
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Re: Direct drive 5 speed

Post by bertvorgon »

Mike..I have the FS5C71B, over drive: 2.906, 1.902, 1.308, 1.000, .865, and they call it the close ratio OVERDRIVE,
P/N 32010-N3130.

Baz... I was not aware that that swap could be done. I will mention that to Andy. You say it is not difficult, but, what is actually required to do that?

Thanks.
"Racing makes heroin addiction look like a vague wish for something salty" - Peter Egan

Keith Law
1973 2 Door Slalom/hill climb/road race / canyon carver /Giant Killer 510
1971 Vintage 13' BOLER trailer
datzenmike
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Location: Van. Isle.

Re: Direct drive 5 speed

Post by datzenmike »

Thanks Keith.
"Nissan 'shit the bed' when they made these, plain and simple." McShagger510 on flattop SUs
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Baz
Posts: 521
Joined: 13 Jul 2004 07:34
Location: Lonsdale South OZ

Re: Direct drive 5 speed

Post by Baz »

bertvorgon wrote:Mike..I have the FS5C71B, over drive: 2.906, 1.902, 1.308, 1.000, .865, and they call it the close ratio OVERDRIVE,
P/N 32010-N3130.

Baz... I was not aware that that swap could be done. I will mention that to Andy. You say it is not difficult, but, what is actually required to do that?

Thanks.
Recently we put the 2.9 first Z box into an S13 gear box case,
NA S15 for track use we needed the closer ratios.

L into SR : change the front lay gear bearing to SR bearing.
Fit bush ( turned down "A series" pilot bush) into SR housing.
This is due to the L series main gear selector shaft being smaller in diameter than the L series.

SR into L " fit L series lay gear bearing & ream out the L housing to take the larger SR selector shaft.
or turn down the selector shaft to suit.
Piss easy job really.

Check out the giken gear sets for the SR.
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