Messages

1

Swaps, Turbos, Buildups / Re: How to build M42 Turbo for 250HP

« on: May 15, 2014, 11:08:44 AM »

from research ive gathered it seems that the rods and crank are forged and can handle over 300hp .the pistons on the other hand i heard are the weaker point. on a good tune tho maybe they will hold up but not 100% sure on that. Ive also heard that the stock head bolts start to stretch at about
10psi if your boosting at 10psi for an extended period of time and 10 psi should net you at around the 200hp range. What im planning on doing is going with the stock head gasket thickness and mls. ARP head bolts ARP rod bolts and ARP main bolts if available and then going with some race bearings or stock would probably be fine too. CP pistons from VAC motorsports at either stock 10:1 compresston of slightly lower at 9.5:1 compression.
With the ARP hardware and forged pistons, ml gasket the high compression with about 10 to 15 psi shoulndt be a problem with a good tune and youll get nice low end (out of boost) response and it should boost up nice but that also can be changed depending on the size of your turbo. on this set up i
think you could be close to the 300 mark if tuned properly at round 15 psi.

2

Engine management / Re: Tuner pro o2 sensor Issue.

« on: May 13, 2014, 09:07:05 PM »

bump

3

Engine management / Tuner pro o2 sensor Issue.

« on: April 15, 2014, 07:54:50 PM »

For those of you running Tuner pro. Im having Trouble with the factory o2 sensor correcting my tune and leaning out my afr's back to stock after tuning fuel maps. what ive been doing to counter act this is leave the o2 sensor unplugged. This is working but the check engine light stays on and it kinda annoys me seeing it on all the time. Is there a way to deactivate the o2 through tuner pro via an o2 map or something? Any insight on this would be helpful. Thanks. 

for reference in running Tuner Pro RT the Ostrich emulator and DMCL's xdf and bin which are working excellent so far other than the o2 thing.
Thanks again man. Going boost soon!

4

Swaps, Turbos, Buildups / Re: Planning E36 cheap turbo top mount manifold

« on: March 08, 2014, 10:07:38 AM »

This exactly what im currently running in to with my m42 turbo build. what im using is an ebay m50 manifold. I chopped the back 2 cylinders off and I plan in chopping the t3 flange off weld an extension pipe with the appropriate angle to clear the cylinder head/vc and the strut tower then weld my t3 back on mount turbo, run down pipe exc.. similar to the pic of the turbo you posted. I have an e30 chassis tho. I wonder if the clearance between the strut tower and head are close to the same. hum...

5

Swaps, Turbos, Buildups / Re: Nitro

« on: January 12, 2014, 06:50:42 PM »

forgot to mention. YOU ONLY SPRAY NITROUS AT WOT! and im using an Innovative MTX-L wideband for AFR monitoring. Im instlling a Zex dry shot system right now on my bone stock m42. ill let you guys know how it goes. its called the "Safeshot" by Zex and it only allows up to a 35 shot of nitrous so its very conservitive. check it out. http://www.summitracing.com/parts/zex-82357/overview/

6

Swaps, Turbos, Buildups / Re: Nitro

« on: January 12, 2014, 06:42:17 PM »

nitrous is an oxidisor so when its injected in to the engine its creates more oxygen. Turbos do the same thing by forcing extra air in to the
cylinder. so when you have added more oxygen to the cylinder than the factory ecu is tuned for than youve created an extremely lean condition which creates extreme heat and causes preignition or " detination" which destroys engines. That being said if you install a nitrous system  or a turbo or a "blower" (super charger) you have to compensate all that extra with more fuel. To accurately do that you need wide band o2 and some sort of efi tuner or something to ramp up fuel to keep your AFR's in the safe zone. What im using is Tuner pro and an ostrich emulator for tuning on the fly and once i get my tune dialed in i burn a new chip with my burn2 chip burner. you cannot (burn over the stock chip you will have to buy a re writeible chip. theyre cheap off moats.com) but the fact of the matter is n2o (nitrous) does essentialy the same thing a turbo or super charger does but whith a chemical compound and it can be very safe. Now if you buy a "wet" nitrous system that means the system taps in to your vehicles fuel system and usues 2 solinoids one for the fuel and one for the nitrous and it mixes the nitrous with the fuel for you so there shouldnt be a need for a tune unless you want to change ignition maps and stuff. so the wet system is more of a bolt on spray and pray kind of set up. but at a  low shot 50 ish and you match the propper szed fuel jet for what nitrous jet your using acording to the nitrous manufacturer you used then you should be okay. the dry kits can be dangerous if you dont tune your engine to add fuel at WOT but if you do than you should be A okay.

7

Engine management / Engine Management Options?

« on: February 20, 2013, 09:58:11 PM »

bme30 you say your using Midnighttuning solutions software. What do you mean by that. Is that just his xdf files?

8

Engine management / Knock sensor add for tuning purposes?

« on: February 20, 2013, 09:53:29 PM »

Yeah data logging that would def be an added bonus. I suppose $235.00 Really isnt all that bad for all that you get. I def like the system but im just stuck in my DIY tendencies. ha If i just had something to moniter knock in real time that would be better than nothing. Anything is better than nothing. ha

9

Engine management / Knock sensor add for tuning purposes?

« on: February 20, 2013, 05:46:01 PM »

@bmwconnect Thank for the suggestion. I might have to go with the headphones. That knock link is pretty sweet if only it didnt cost $235.00. I was thinking maybe it would be possible to get a knock sensor from the local pull apart and wire it in to a counter or i suppose you could do a light like the Knock Link. Cuz a knock sensor is just a piezo electric sensor so when it detects a vibration/pressure or in this case, Knock it generates an electrical signal (voltage).  So im thinking all youll need is your ground and a your knock sense or "signal" wire wired in to your light and once it sees knock it should light up. you may need a 12v supply somewhere idk.. I think im gonna play with this and see if i can come up with something. If i do ill post it up for all to see.

10

Engine management / Knock sensor add for tuning purposes?

« on: February 18, 2013, 08:23:35 PM »

So i have a theory. Im planning on boosting my m42 (e30) as you all know, only the e36 m42's came with knock sensors and our old school ones in the e30's did not. That being the case, im wondering if its possible to mount up a knock sensor on the block wired in to some sort of digital counter so as i tune the ignition map i can monitor the knock count. Has anyone done this already or am i going to have to pioneer this? ha.. it would be nice to see how it was set up if it has already been done.