Author Topic: The mess under the intake (Read 331137 times)

zav3n · « **Reply #45 on:** May 21, 2007, 12:15:58 AM »

ya i was looking for a way to mount the icv and i tried to put it under but i didnt think it would withstand my driving lol.. anyway so far so good ima put a electric fan in soon soo ill have more room too work on the engine..

ps what kind of filter should i use for the catch can i dont want anything fancy just something that works good..

-Zaven

dude8383 · « **Reply #46 on:** May 21, 2007, 12:49:01 AM »

Quote from: zav3n;26189

omg i had the hardest time trying to figure this out... pacific BMW acually quoted me 297 dollars and then when i ask for the part number they hung up on me then i ask bma and they got the part right away. and while i was trying to figure it out christophbmw sent me a pm w/ the pn but i checked it to late lol...

hope this helps.!

water pipe : 11 53 1 714 738
o-ring : 11 53 1 709 157

here are some pics of my new set up without the mess.

Dude...THANK YOU!

I can't tell you how long I've been trying to get those numbers.

n2motorsports · « **Reply #47 on:** May 27, 2007, 02:13:45 PM »

Quote from: tjts1;25556

The coolant bypass is made out of a 1 foot long piece of 5/8" heater hose.

Based on the above picture, was that the only modification you made under the intake manifold?

btw great write-up and great idea, anything to eliminate clutter while reducing the risk of unexpected leaks is a must do mod for me.

D. Clay · « **Reply #48 on:** May 27, 2007, 04:39:25 PM »

Quote from: zav3n;25997

What is the part number for this tube. I cannot find it in realoem or bmwfans.info.

Wise Old Dog · « **Reply #49 on:** May 27, 2007, 04:47:02 PM »

11531714738 It's listed under the engine housing section.

tjts1 · « **Reply #50 on:** May 31, 2007, 03:21:00 PM »

Quote from: n2motorsports;26662

Based on the above picture, was that the only modification you made under the intake manifold?

btw great write-up and great idea, anything to eliminate clutter while reducing the risk of unexpected leaks is a must do mod for me.

Basically yes. I just gave the coolant a much shorter route from the head to the return pipe.

gearheadE30 · « **Reply #51 on:** May 31, 2007, 04:22:15 PM »

I'm going to be removing my intake very soon as well. Is it worth it to take the plate out? Have there been any nagative consequences such as bad cold idle or fuel mileage? My dad thinks I should put it all back as the factory had it, but I'm not sure its worth the troble. Being that we get weather down to about 0 degrees sometimes in the winter, would I have any major problems if I remove it?

Thanks for the advice and the great pics

tjts1 · « **Reply #52 on:** May 31, 2007, 05:37:22 PM »

Quote from: gearheadE30;26903

I'm going to be removing my intake very soon as well. Is it worth it to take the plate out? Have there been any nagative consequences such as bad cold idle or fuel mileage? My dad thinks I should put it all back as the factory had it, but I'm not sure its worth the troble. Being that we get weather down to about 0 degrees sometimes in the winter, would I have any major problems if I remove it?

Thanks for the advice and the great pics

The plate was a bandaid BMW added after designing the whole engine in order to pass start up emissions in the US. Take a close look at this BMW publicity shots from when the engine was first intruduced. No plate.

I have put about 500 miles on the car without the plate and I'm getting 27mpg.

e9nine · « **Reply #53 on:** May 31, 2007, 08:51:04 PM »

I have eliminated the plate twice on m42s with no harmful after effect

gearheadE30 · « **Reply #54 on:** June 01, 2007, 03:33:13 PM »

Good to know, I think I'll toss it

christophbmw · « **Reply #55 on:** June 02, 2007, 12:32:03 PM »

Quote from: tjts1;25711

Its a sealed system. As far as I can tell it doesn't take in fresh air anywhere. It just has an outlet for the blow by gases that get around the piston rings. If there was fresh air coming in, it would act like a vacuum lean and mess with the engine management. The blow by gases have already been burned in the combustion chamber and therefore contain no oxygen. Its a very toxic inert gas.

im pretty sure our PCV system goesg throught the timing case up to the valve cover hose wich goes to the TB. and if that line from the valve cover to TB is not tightened with a clamp or if it is cracked and leaking our M42's are usaully prone to rear main failure due to the crank case pressure (or at least thats what ive discovered in my experience). correct me if im wrong.

Frankie · « **Reply #56 on:** October 06, 2007, 12:49:31 AM »

Quote from: christophbmw;25557

replace that plastic coolant junction piece now while you can! they are really chea from the dealer.....and dont forget the o-ring that goes with it.

What plastic coolant junction?

tjts1 · « **Reply #57 on:** October 06, 2007, 10:35:25 AM »

This piece with the green coolant inside.

bmuser · « **Reply #58 on:** October 15, 2007, 07:00:54 PM »

sorry but what plate are you guys talking about?

gearheadE30 · « **Reply #59 on:** October 15, 2007, 08:01:29 PM »

It is a plate that is mounted between the throttle body and the upper intake manifold. It looks like an aluminum spacer from the top. I recently learned that it was put there to keep the throttle body from freezing at low temps. Apparently chinks of ice were foring in cold weather testing and blocking the TB so it wouldn't close. I havn't heard of this actually happening to anyone who has removed it, but I guess it was only recorded as occuring below 0 degrees. The plate is also a bit of a restriction in the intake and has 4 or 5 hoses running to 2 different plates that get cracked and leak.