Author Topic: Buildup: My quest for NA 180 hp  (Read 84916 times)

RouteZeroDesign

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Buildup: My quest for NA 180 hp
« Reply #90 on: May 24, 2008, 04:12:27 PM »
256*? i assume these cams are for engine one yes?
256* wouldnt be enough to lower your dynamic compression on engine two....i guess that will be 300* duration territory :)

Boyracer

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Buildup: My quest for NA 180 hp
« Reply #91 on: May 25, 2008, 03:48:44 AM »
Yes they are only for engine 1. The reason why they are that mild is that I already have custom chip made for identical and common Shrick cams so if they would differ too much from Shricks then chip would not operate in optimal way. Also, you cannot reduce camshafts base circle much over 1 mm or hydraulic lifters can run out of adjustment range.

I already have one extra stock condition pair waiting in the shelf for engine 2. On that engine I will have solid lifters so reducing camshaft base circle is not a problem because I can manually adjust the lash away. Camshaft grinding guy said that there is lots of material on M42 to be removed so quite high lifts are achievable, I suspect 12 mm is not a problem.

ispierrot

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Buildup: My quest for NA 180 hp
« Reply #92 on: May 25, 2008, 08:40:12 AM »
Quote from: Boyracer;43839
Solved that one! Cometic makes M42 gasket with 86 mm bore :)

86mm MLS .060" C4349-060 1 $141.70



Hi
For 86 mm S42 engine there is a set of  gasket at BMW 11 00 1 416 165, or just the head gasket 11 12 1 415 808 is quite expensive but top.
« Last Edit: May 29, 2008, 04:11:26 AM by ispierrot »

mkodama

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Buildup: My quest for NA 180 hp
« Reply #93 on: May 25, 2008, 05:54:57 PM »
Nevermind this post, I didn't think M42 camshafts were hollow.  Thanks strypt!
« Last Edit: May 26, 2008, 02:43:09 AM by mkodama »

strypt

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Buildup: My quest for NA 180 hp
« Reply #94 on: May 26, 2008, 02:13:26 AM »
M42 camshafts are hollow.

Boyracer

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Buildup: My quest for NA 180 hp
« Reply #95 on: June 09, 2008, 05:16:25 AM »
Reground camshafts and their chip are in :eek:

Took me some 6 hours to complete the operation. This was my first time I have opened anything on engine so next time should be much faster.

Car initially hunted quite badly on idle, rpm's varied from 1500 to 500 but it did not stall. After few minutes idle stabilized to 750-800. Idle quality is bit rougher, engine shakes bit more. There is also audible whine which follows engine revs coming from somewhere under the intake manifold or alternator area.

Engine stalled once when I was on "installation lap", I was climbing up small hill at steady pace when engine just died. After short check to see there was nothing fatal going on I restarted the engine and after few tries it was ok. Drove back to garage but since I had to start my 250 mile drive back to home I could not do much but hope for the best. Drive home went well, not problems at all.

As performance and driveability, there is certainly more poke on mid and high revs and the engine intake noise is more raw. Very low revs might have lost a bit of power and it is bit easier to stall the engine, should not be a problem when I get used to it and perhaps ECU is still adapting. I would say this upgrade had about the same effect on butt dyno as did previous chip only (that was +15 hp). I will take the car to same dyno as I went after installing chip. Chip manufacturer says this cam and chip combo should be good for 170 hp.

So far so good then. My only concern is the whining noise. It does not sound like metal grinding against metal and neither it sounds like chain rattle. It is pretty much something you would expect from alternator but we checked it and it was charging just fine. I have to change the belt anyways soon so I could try running the engine without alternator etc for a moment to see if it comes from there.

Stock camshafts. Notice shiny cam lobes



Reground camshafts



From this heap I try to build up 2.5" exhaust... Thingie standing up is 200 CPI metal catalysator which should flow very well

« Last Edit: June 09, 2008, 12:55:09 PM by Boyracer »

peerless

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Buildup: My quest for NA 180 hp
« Reply #96 on: June 09, 2008, 11:10:41 AM »
The whining noise sounds like the chain tensioner holding the chain too tight. I had this problem on a M42 I just built. Quite annoying. The tensioner was brand new. So we threw in another brand new one and it quited down. Its still there, but quieter now.

You can find my post in the engine and drivetrain forum. Video is included.
Robert


www.e30motorwerks.com
(714) 398-8405

Boyracer

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Buildup: My quest for NA 180 hp
« Reply #97 on: June 09, 2008, 12:41:37 PM »
Yeah I did find your thread right after I wrote that message and indeed it sounds like same issue. I would be quite relieved if it is only chain tensioner and nothing really serious.

I will investigate this at weekend, if not earlier :)

RouteZeroDesign

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Buildup: My quest for NA 180 hp
« Reply #98 on: June 10, 2008, 09:29:37 AM »
Congrats on getting the new cams and chipped installed :)

Any chance that we could get a video of it running? because i would love to hear the new induction noise.

Good luck with your project

Frankie

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Buildup: My quest for NA 180 hp
« Reply #99 on: June 10, 2008, 11:45:09 PM »
Great work! See you on track ;)

mkodama

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Buildup: My quest for NA 180 hp
« Reply #100 on: June 11, 2008, 02:55:00 AM »
Nice!

Are you ever going to get an actual dyno graph or just take the word of the chip tuner for now?

Boyracer

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Buildup: My quest for NA 180 hp
« Reply #101 on: June 11, 2008, 04:51:47 AM »
Quote from: mkodama;51039
Nice!

Are you ever going to get an actual dyno graph or just take the word of the chip tuner for now?


Huh?

My car has been on dyno with only chip about a month ago:



And for chip and cams I stated:

Quote
I will take the car to same dyno as I went after installing chip.


So the answer is yes, I will get the actual dyno graph.

Frankie

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Buildup: My quest for NA 180 hp
« Reply #102 on: June 11, 2008, 08:23:51 AM »
Btw, what was the result before you installed that chip?

Boyracer

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Buildup: My quest for NA 180 hp
« Reply #103 on: June 11, 2008, 08:29:32 AM »
No idea unfortunately... I tried to reserve time for that particular dyno a week before I installed the chip but they never called me back. Now it's impossible to get stock engine baseline since cams are in.

E30nate

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Buildup: My quest for NA 180 hp
« Reply #104 on: June 11, 2008, 03:15:34 PM »
could i get the name of the guy who made your chips on ebay?