RB25DET swap into an 95 240sx, question about Tach.

[Mikojai]

I'm about to drop an RB25DET into my 95' 240sx and was wondering which Gauge cluster do i use do i pick up an jdm R33 gauge cluster or ? is there anyway to save some cash? help

also which engine mounts would you recommend.

-McKinney mounts mounts -or--Syko mounts

?

Modified by Mikojai at 7:21 PM 5/26/2007
Modified by Mikojai at 7:31 PM 5/26/2007

[nismopwr240]

actually carl is offering some tach mod now. he made another thread about it, its right here in the rb forum. very recent

[redtop91]

tach recalibration?http://lsauto.com/products.asp



i sent mine in to them. ill let people know how it turns out when it fires up.

Tach Recalibration.

1. Pull Cluster2. Remove Backin and Clear plastic cover for the gauge.3. Take a sharpie and mark where the needle sits on the gauge face so when you're pulling the needles off you'll know where it sits so its not screwed up when you put them back on, you can also mark the spot it sits on. 4. Remove the gauge faces.5. Where the tachometer face is... there is a variable resistor that you can stick a screwdriver in. 6. Ussually you turn it all the way to the left.7. Once you've done that, do this entire process in reverse order.

Now since all motors are a little different and so are the electrical outputs, you might have to pull it back out, an then turn it a litte more right and a little more right, to get it perfect. Just keep doing it untill you're satisfied or if you have an SAFC it makes it alot easier to calibrate.

When using the sharpie on your gauge cluster, to get the stuff off, all you need it some axe body spray, or some red zone body spray. Apply it to some cloth and dab it onto the area that the sharpie has been applied to and it will either slowly or pretty much instantly come off.

If i left out anything or you're still confused quote and reply to this.

[Neejay]

Tach Recalibration.

1. Pull Cluster2. Remove Backin and Clear plastic cover for the gauge.3. Take a sharpie and mark where the needle sits on the gauge face so when you're pulling the needles off you'll know where it sits so its not screwed up when you put them back on, you can also mark the spot it sits on.4. Remove the gauge faces.5. Where the tachometer face is... there is a variable resistor that you can stick a screwdriver in.6. Ussually you turn it all the way to the left.7. Once you've done that, do this entire process in reverse order.

Now since all motors are a little different and so are the electrical outputs, you might have to pull it back out, an then turn it a litte more right and a little more right, to get it perfect. Just keep doing it untill you're satisfied or if you have an SAFC it makes it alot easier to calibrate.

When using the sharpie on your gauge cluster, to get the stuff off, all you need it some axe body spray, or some red zone body spray. Apply it to some cloth and dab it onto the area that the sharpie has been applied to and it will either slowly or pretty much instantly come off.

If i left out anything or you're still confused quote and reply to this.

For anyone who has done this, how close to accurate is it? (if you've just left it at all the way to the left)

[S14-NEO]

its actually very accurate for the most part...maybe a few hundred RPM off at the most...ive done it to mine and i am very happy witht he results

[Neejay]

its actually very accurate for the most part...maybe a few hundred RPM off at the most...ive done it to mine and i am very happy witht he results

Is this only for an S14?

[lilskyline240]

with my Rb30 swap into a s13 i used a JDM cluster and did the same thing by adjusting that POT on the back of the speedo and my Km/hr speedo now reads in Mph almost perfectly

[Neejay]

with my Rb30 swap into a s13 i used a JDM cluster and did the same thing by adjusting that POT on the back of the speedo and my Km/hr speedo now reads in Mph almost perfectly

Ok, cool. So I can do that with the speedo as well. I thought something else was needed to use the JDM speedo though. No?

Just awaiting someone to confirm this method for the tach now...

[gawdzilla]

is there a pot on the speedo to adjust?

i think the 14 and 13 tach adjustment are different. on the 14 i've done 2 and i dont max out the adjustment

[imotion s14]

SYKO.

[lilskyline240]

[QUOTE=Neejay]Ok, cool. So I can do that with the speedo as well. I thought something else was needed to use the JDM speedo though. No?

Just awaiting someone to confirm this method for the tach now...[/Q]

im sayin this only works for the speedo. I sent my cluster to Carl H who calibrated the Tach for me-