★ ★ Project Glacier | Make the E30 a Daily Again ★ ★

[stonea]

M30 swap?

[Staszek]

Damnit. That makes a lot of sense too... I already have the S52 cams and M50 intake for the M52 as well...

I still go back and forth, thinking I could have made this car so OEM stock and probably would be worth a bit more in the future, but I already bought the S54 and to be honest I am looking forward to all the extra power.

If I had an M3 I would absolutely keep it stock. If my IS was in mint shape when I bought it I may have kept the M20, but since I needed to go through such an extensive overhaul I figure go all the way and get the power I wanted.

Anyway tough decision, but if you are keeping the car forever I would do the swap.

[LowR3V'in]

turbo m20

[wworm]

M30 swap?

this
so that theres more m30 swap info/experience on r3v ;D

[MrBurgundy]

I've gone back and forth between the two quite a bit. I love the sound the M20 makes, but I really don't understand why they're so hard to get power from. There seems to be no shortage of people getting 300hp from the L series motors that came in my Datsun (not cheap, but not outrageously expensive), whereas it seems like no one, save for a few Aussies, has gotten that kind of power from an M20, despite it being better on paper. I don't really see the point in building an NA M20 for what most people get out of them. But the M20 does seem to do well with boost, which is the current plan for my E30, assuming it doesn't grenade itself again.

As for the M52, well, it seems to be pretty easy to get good power out of it, and it responds even better to boost, but - and I might be in the minority here - it sounds like shit. It might be the worst sounding inline six I've ever heard. The sound the engine makes is a large part of what makes a car enjoyable to me, so that's just not going to work. Also, in terms of weight, I would think an NA M52 would weight about the same as a turbo M20, and in that case the M20 has way more power potential.

Then, of course, there's the timing belt vs timing chain argument.

I agree with it sounding like shit. I'd rather go slow and have a good sound track than to go faster and sounding like crap.

I have a stock m20b25 with a nice exhaust system and it's just a pleasure to turn off the stereo and roll down the windows.


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[MPLFoster]

...

I have a stock m20b25 with a nice exhaust system and it's just a pleasure to turn off the stereo and roll down the windows.

This.

I have IE long tube race headers with two vibrant resonators (catless) and a vibrant muffler and it sounds fucking glorious. Dont care that im not fast. Puts a smile on my face just hearing that m20.

ok im back on the M20 train again...

[F34R]

this
so that theres more m30 swap info/experience on r3v ;D

The m30 is such a crap engine :grin:

Stick with the M52 man... it doesn't look like you're building this for Concours d'ENTlegance.

Fixed tee hee

[e30austin]

I'd rather have an M52 than a high miles M20...just saying. Unless you plan to completely rebuild your existing engine, stick with your M52 plans. Each has their pros and cons, but if you basically have everything to do M52, then I'd do that.

That being said, I have done 24v on basically every other E30 I've decided to keep for a while...I do have a really nice '88 schwarz car that I can't bring myself to do a damn thing to. The M20 looks so nice in that particular engine bay to me. The others? Meh, ain't care.

[2mAn]

24v is better in almost every way. more power and more efficiency

this is just Lambos tactic of distracting us from the real news ie progress.

Get back to work :hitler:

[LowR3V'in]

ya kinda dumb trying to talk him out of putting in an m50/s50.

keeps it simple.
good on gas.
NO POWER.

i was going to talk allot of shit but no. :P

lambo have you gotten a ride an a m50/s52 car?
how disappointed where you when it didn't live up to the forum hype?

[lambo]

So I did the easy thing of buying parts... now I actually have to do real work :drink:

But, this along with a regular parts order I made over Black Friday should be around 90% of the shit I actually need to finish the swap. So.. I guess I have no excuse now.

[Wschnitz]

poly

[wworm]

Woooo! Treehouse CABs for header clearance? Or just for RRRRRRIGIDITY?


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[lambo]

poly

I already have solid motor mounts on the M20 lol. They're fine. Nerd. Plus I'm not a huge fan of the E28 mount solution.

Woooo! Treehouse CABs for header clearance? Or just for RRRRRRIGIDITY?

Mostly for clearance. I remember reading years back that 24v swap exhaust had issues with CAB clearance. No idea if that's actually true or not so I just grabbed these just in case lol.

[Dj Buttchug]

give me that selector rod