Spare M42 refresh/rebuild

[fresh_TD]

Guys.. I'm getting ready to post all these parts for sale. If you are interested in anything, feel free to PM or shoot me a text 850-226-1959. I haven't had the time nor do I have the time right now to complete this build.

[ccsdo5]

4.45 is just fine for a N/A street car. After running one for well over 2 years I think 1st is too short and 5th is still OD. It really does bring out the fun parts of driving an M42.

Yeah but I'm currently turbo M42 so a 4.45 will suck on the street BUT it'll make it so I can drift 3rd gear.

The M42 and SR20 have similar gear ratios with their transmissions and a big thing to do is put a 4.6 on an SR20 car to drift in third gear. so a 4.45 should give about the same wheel speed with getrag 240.

If you go to Tomei USA's website on the left side there is a wheel speed calculator so you don't have to do that math to figure what rear end will work best with your car.

http://www.tomeiusa.com/

[e30s50dan]

^^. Will see in the spring when I track my m42 ��

[roguetoaster]

A healthy M42 can take high RPM for hours at a time, or at least in an endurance racer it can.

[kwill22]

I’ve got a 3.73 for sale

I have a buddy with one local to me.

My city is mostly highway so a 3.75 would be ideal. Plus i can't really sustain anything above 100 without getting that voice in my head saying revs too high. Lol not that i want too but id like to see what she can do.

[roguetoaster]

With a 4.45, you sit at 6900rpm at 2mph in first gear..lol

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Well, that's a valid point, but at least I can't get over 30MPG anymore.

[fresh_TD]

4.45 is just fine for a N/A street car. After running one for well over 2 years I think 1st is too short and 5th is still OD. It really does bring out the fun parts of driving an M42.

With a 4.45, you sit at 6900rpm at 2mph in first gear..lol

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[roguetoaster]

The 3.73 is perfect for a turbo m42, that's what I have now in my car and it's great but I'm trying to find a 4.45 so I can ruin my life even more

4.45 is just fine for a N/A street car. After running one for well over 2 years I think 1st is too short and 5th is still OD. It really does bring out the fun parts of driving an M42.

[ccsdo5]

The 3.73 is perfect for a turbo m42, that's what I have now in my car and it's great but I'm trying to find a 4.45 so I can ruin my life even more

[e30s50dan]

I have a 4.27LSD I'm going to try. It's not much a street car as it will be a track ride

[ThatOneEuroE30]

Sweet. I've been half-assedly looking for a spare m42 to build and boost. Now seeing this threat is getting me excited again. This winter I'm going with a single mass-lightened flywheel, Z4 shifter, new clutch, and either a 4:10 or 3:75lsd. I have in open 4:10 in line now and thinking about dropping down since i eventually plan to boost.

I’ve got a 3.73 for sale

[fresh_TD]

Sweet. I've been half-assedly looking for a spare m42 to build and boost. Now seeing this threat is getting me excited again. This winter I'm going with a single mass-lightened flywheel, Z4 shifter, new clutch, and either a 4:10 or 3:75lsd. I have in open 4:10 in line now and thinking about dropping down since i eventually plan to boost.

I think 3.73 would be perfect for FI. I ran 3.73 on my previous stock M42, and it was perfect for hwy driving.

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[kwill22]

Sweet. I've been half-assedly looking for a spare m42 to build and boost. Now seeing this threat is getting me excited again. This winter I'm going with a single mass-lightened flywheel, Z4 shifter, new clutch, and either a 4:10 or 3:75lsd. I have in open 4:10 in line now and thinking about dropping down since i eventually plan to boost.

[fresh_TD]

^^this...any updates?

I just put it on hold for now. I will pick back up with the build here really soon.

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[e30s50dan]

^^this...any updates?