Cheap/Basic M42 Mods.

[Balleristic31]

The efan made a HUGE difference on mine. We're talking 7rwhp on the dyno. I run a volvo dual speed efan, though I always run it on high. Have no problems keeping the motor cool with the stock shroud in place. That's sitting in parking lot traffic with the a/c blasting.

Wow seriously 7 whp? That's crazy.
Would like a 16inch spal from amazon work well enough to keep the engine cool?

[bloodshot-e30]

theres a section at the begining of R3v B4 u click on forum and u can read about M42 options from just stock. u can advance cam timing and do a few other things to get it better off ;)

[trackjunkie21]

Wow seriously 7 whp? That's crazy.
Would like a 16inch spal from amazon work well enough to keep the engine cool?

More than enough, my 24v swap car will be running this setup.

[gearheadE30]

I'm also running the Volvo fan, with a custom shroud. It is hooked up to the temp switch that used to control the aux fan, and there is now an intercooler where the aux fan used to be. It has never come on high speed and I have never had an issue with it being able to keep the engine cool, even in traffic or on track on 90 degree days.

And boost is awesome and can be done for cheap. That said, my head gasket just went, and it does put more stress on an engine. Not that I had many illusions about how long a 250k mile gasket would hold up, hah.

[KenC]

thats weird. i never have any issues with cooling and im running no shroud at all... I dont have a/c but i dont feel like that changes much

AC makes a HUGE difference. The condenser reaches temps above 120F. Your aux fan is just blowing that hot air onto your radiator at idle.

[KenC]

Wow seriously 7 whp? That's crazy.
Would like a 16inch spal from amazon work well enough to keep the engine cool?

If you're running the 16" Spal as a puller, then you're probably fine.

[Schnitzer318is]

Wow seriously 7 whp? That's crazy.
Would like a 16inch spal from amazon work well enough to keep the engine cool?

Should be ok... I'm not sure how big the volvo one is, but I'm guessing at least 12."

[Dj Buttchug]

AC makes a HUGE difference. The condenser reaches temps above 120F. Your aux fan is just blowing that hot air onto your radiator at idle.

yea i no longer have an aux fan either...

[KenC]

The efan made a HUGE difference on mine. We're talking 7rwhp on the dyno. I run a volvo dual speed efan, though I always run it on high. Have no problems keeping the motor cool with the stock shroud in place. That's sitting in parking lot traffic with the a/c blasting.

You have documentation to prove the stock clutch fan is a 7whp drag on the engine?

You have a bridge you want to sell me too?

[Schnitzer318is]

^Yes I do. Not all motors are the same and perhaps my fan clutch was not in the best shape or some other factor. But yes, I have dyno sheets from before, and after the fan delete. YMMV.

Not selling anything, just giving personal experience. Take it or leave it... matters not to me. I'll enjoy my extra 7hp no matter what you believe.

[SSE30]

http://bmwnut.blogspot.com/2006/04/1991-e30-bmw-318is-performance-mods.html

This is a really good article on 318is / m42 mods. Read the entire thing.

[SimplyDope]

Good read. Thanks for that.

[Balleristic31]

^^ that is the same exact article that is on r3v's home page.... :p

[freeride53]

Hey guys, are there any write-ups on the volvo e-fan conversion? Searched and came up dry..

[acolella76]

Hey guys, are there any write-ups on the volvo e-fan conversion? Searched and came up dry..

Just buy a SPAL clone fan on ebay and they come with directions. There are also a couple of write ups for this fan floating around. Idk what volvo fans go for but these fans are like $30-40 new