S15 sr20det 5 speed transmission? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

FRM · 09-20-2018, 07:54 PM

I recently purchased an sr20det and the seller says that it is 5 speed. I thought that all s15 sr's were 6 speed? I am to receive it on Monday but is there any way to see if it is actually a 5 speed or not?

gaz_moose · 09-21-2018, 12:59 PM

all turbos are 6 speed. the none turbos are 5 speed.
you will know straight away as the 6 speed is an asin box and not the usual Nissan small case box.

FRM · 09-21-2018, 03:04 PM

Thanks is this one of them? Thanks for the help so far

Kingtal0n · 09-22-2018, 12:28 AM

They put 5-speeds on them to save money. Its more profitable for them to sell the 6-speed separately and use a cheap 5-speed on it.
Or maybe the 6-speed blew up...

You don't want a 6-speed usually anyways. They are more prone to failure, due to some kinda cir-clip issue that has no resolution.
Although I know quite a few 6-speed units that work fine to this day. hit or miss I suppose.

S15 motors use different computer and coilpacks, so pay attn to the ecu and coils for verify.

ANDY black s13 · 09-22-2018, 05:28 AM

Quote:

Originally Posted by Kingtal0n

They put 5-speeds on them to save money. Its more profitable for them to sell the 6-speed separately and use a cheap 5-speed on it.
Or maybe the 6-speed blew up...

You don't want a 6-speed usually anyways. They are more prone to failure, due to some kinda cir-clip issue that has no resolution.
Although I know quite a few 6-speed units that work fine to this day. hit or miss I suppose.

S15 motors use different computer and coilpacks, so pay attn to the ecu and coils for verify.

There is a mod for the j160 4th gear cir-clip issue,
not cheap if done by these people,but easy redone DIY style
https://neatgearboxes.wordpress.com/...x-circlip-mod/

Kingtal0n · 09-22-2018, 07:57 AM

cool thanks for sharing. I'm glad somebody can finally apply a fix it. Its just so obscure, expensive, I'm not sure it has an application for typical budget daily drivers just yet.

ANDY black s13 · 09-22-2018, 09:28 AM

a local engineer could replicate what they do to the shaft and fab some cir-clips
the j160 as in the gearbox the UK Lexus is200 1g (2.0 inline 6 NA)
came with has a stronger gearset,uses same C clip design,
and when turbo/supercharged can last many miles at over 500 bhp atw
I have a back burner project to adapt one onto a CA18det

09-20-2018, 07:54 PM	#1
FRM Join Date: Sep 2018 Location: Seattle Age: 30 Posts: 2 Trader Rating: (0) Feedback Score: 0 reviews	S15 sr20det 5 speed transmission? I recently purchased an sr20det and the seller says that it is 5 speed. I thought that all s15 sr's were 6 speed? I am to receive it on Monday but is there any way to see if it is actually a 5 speed or not?

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

09-21-2018, 12:59 PM	#2
gaz_moose Zilvia Member Join Date: Mar 2008 Location: engerland Posts: 242 Trader Rating: (0) Feedback Score: 0 reviews	all turbos are 6 speed. the none turbos are 5 speed. you will know straight away as the 6 speed is an asin box and not the usual Nissan small case box.

09-21-2018, 03:04 PM	#3
FRM Join Date: Sep 2018 Location: Seattle Age: 30 Posts: 2 Trader Rating: (0) Feedback Score: 0 reviews	Thanks is this one of them? Thanks for the help so far

09-22-2018, 12:28 AM	#4
Kingtal0n Post Whore! Join Date: Jul 2005 Location: South Florida Age: 38 Posts: 4,649 Trader Rating: (17) Feedback Score: 17 reviews	They put 5-speeds on them to save money. Its more profitable for them to sell the 6-speed separately and use a cheap 5-speed on it. Or maybe the 6-speed blew up... You don't want a 6-speed usually anyways. They are more prone to failure, due to some kinda cir-clip issue that has no resolution. Although I know quite a few 6-speed units that work fine to this day. hit or miss I suppose. S15 motors use different computer and coilpacks, so pay attn to the ecu and coils for verify.

09-22-2018, 07:57 AM	#6
Kingtal0n Post Whore! Join Date: Jul 2005 Location: South Florida Age: 38 Posts: 4,649 Trader Rating: (17) Feedback Score: 17 reviews	cool thanks for sharing. I'm glad somebody can finally apply a fix it. Its just so obscure, expensive, I'm not sure it has an application for typical budget daily drivers just yet.

09-22-2018, 09:28 AM	#7
ANDY black s13 Zilvia Member Join Date: Mar 2012 Location: erith kent england Age: 53 Posts: 153 Trader Rating: (0) Feedback Score: 0 reviews	a local engineer could replicate what they do to the shaft and fab some cir-clips the j160 as in the gearbox the UK Lexus is200 1g (2.0 inline 6 NA) came with has a stronger gearset,uses same C clip design, and when turbo/supercharged can last many miles at over 500 bhp atw I have a back burner project to adapt one onto a CA18det