Need to buy manual trans.

**boisking** · 02-26-2007, 10:15 PM

There are noises coming from beneath my car, and I have a bad feeking the wick is short on this bomb. If anybody has or knows someone who has a trans laying around, I'm willing to talk. By the way, are any parts required (driveshaft, clutch plates, etc.) to switch a 6 speed from an NB into a 1.8 NA? If not, I'll take one of those "weak" 6 speeds off some supercharged/turbocharged guy's hands.

**MiataMike** · 02-26-2007, 10:30 PM

I'm actualy curious as to wether or not you can put a 6 speed in a mx5 that had a 5 speed in it before without major modifications.

**Titus** · 02-26-2007, 10:40 PM

I believe Kags1969 has (or is preparing to) put a 6spd into a 5spd Miata. I think there were a few other bits that needed to be addressed, but I don't recall what. Perhaps the starter? If you are interested in going that route, I would start by PMing Kags for information.

**boisking** · 02-26-2007, 10:46 PM

Anything other than direct swap might be above my emergency repair budget. If anybody knows for sure, or has any leads on 5 speeds, I'm game. Good news winter is over and I can put the car down for a while.

**black roadster** · 02-27-2007, 01:04 AM

Originally Posted by boisking

Good news winter is over and I can put the car down for a while.

You just jinxed yourself. You better knock on wood.

I'd guess a 6-spd conversion would need at bare minimum the drive shaft as well.

**trackdog** · 02-27-2007, 08:18 AM

The 6-speed is a 100% identical install, but you want be happy since you are going FI. Are you sure it is the trans and not the clutch or throwout bearing, they can make a serious racket when they go?

Gary

**channelmaniac** · 02-27-2007, 08:22 AM

So can the rear differential... just ask BAM!

**Titus** · 02-27-2007, 08:32 AM

OK... a quick search of the

board shows that you need the transmission and a 6 speed shifter. The mounting plate and starter from the 5 speed are re-used, but you can only use 2 of the 3 bolts that hold the starter in. The drive shaft does not need to be swapped. The other issue is gearing. The 6-speed comes with a 3.909:1 rearend but the 5-speeds came with 4.30:1 or 4.10:1 depending on the year. If you don't change to the 3.909:1 rear, you'll have a nice tree stump puller.

**MiataMike** · 02-27-2007, 09:53 AM

Originally Posted by Titus

OK... a quick search of the

board shows that you need the transmission and a 6 speed shifter. The mounting plate and starter from the 5 speed are re-used, but you can only use 2 of the 3 bolts that hold the starter in. The drive shaft does not need to be swapped. The other issue is gearing. The 6-speed comes with a 3.909:1 rearend but the 5-speeds came with 4.30:1 or 4.10:1 depending on the year. If you don't change to the 3.909:1 rear, you'll have a nice tree stump puller.

A tree stump puller? whats that supossed to mean?

**driftdevil** · 02-27-2007, 11:25 AM

It means that the gearing will be VERY short. First gear is useless

**rudedog** · 02-27-2007, 03:49 PM

Hey, I just saw your post and wanted to let you know there were two Miata transmissions on CraigsList last week. Do a search.

**boisking** · 02-27-2007, 07:31 PM

Originally Posted by trackdog

The 6-speed is a 100% identical install, but you want be happy since you are going FI. Are you sure it is the trans and not the clutch or throwout bearing, they can make a serious racket when they go?

Gary

FI is not in the cards right now. Not the diff (gear whine changes with gear shift). Not the throwout bearing (again with the gear whine). Gear whine is very quiet, but there. The big symptoms that made me think it was a trans problem were: First, the shifter was extremely reluctant to go into 1st and 2nd gear (until I gave it some tough love, which seems to have remedied that part for now); Second, the trans (gears themselves) temporarily locked while idling through a parking lot In first (remedied by selecting neutral and re-selecting first...for now). I haven't driven the car since, thanks to mother nature.

**icepenguin66** · 02-27-2007, 08:14 PM

If you don't have any luck on the forum or Craigs list, the salvage yard may have one for a few bills or you can look up the local engine sellers, such as Eric Japan. I've purchased an engine and now a tranny from them, FWIW you get a 90 day warrenty as well. $400 for the tranny I believe, not sure I got mine for $200 since it was attached to the engine a friend bought.

**Ted the Red** · 02-28-2007, 10:56 AM

You could try http://car-part.com/ it is an online used parts search engine thing. The least expensive one I saw on there was like $125.00 and it was in Grand Prairie.

**ray_sir_6** · 02-28-2007, 11:53 AM

Quote from the "Wheels America Miata Parts Bin"

$150 for a core tranny...or $800 for a rebuilt one. 5-spd

**Supermiataman** · 03-02-2007, 12:32 AM

just a FYI to those who might consider this mod. I have a 01 that had a 5 spd. Put a 6 spd in it. (kept the orig. 4.3 rear gear). and 1st gear is by no means "worthless"....car still won't pull stumps....DAMNIT, was looking to get into the stump pulling business...but there is some of

esp on the worthless roads of Lubbock.

Car pulls much better, feels quicker, and sat right on a friends RX8 rear bumper through 3rd...fwiw. mod is doable. and if u enjoy shifting, and can get a 6spd. cheap. GO FOR IT. (I wouldn't have, except the 6spd. was F.F.F.FREEEE)

This Kags I hear of is this the Kags that used to live in Lubbock, w/ a red NB w/ JRSC? can't believe there'd be more than one...

**boisking** · 03-02-2007, 09:35 AM

I have a lead, I'll keep you all posted.

**boisking** · 03-04-2007, 04:37 PM

fixed.

**black roadster** · 03-04-2007, 07:02 PM

Details?

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