Weight added to BMW e36

  • Thread starter Thread starter RR
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I May race an RX7 but I have BMW's as well and an average E36 makes 199 to 205 RWH with a chip in the factory computer and I won't quote the numbers with Motec. James will fix you up with your second born!!
 
A stock E-36 is rated at 189 hp at the flywheel. I doubt that any chip will give you 205 at the rear wheels.
John Norris
'93 325is ITS
 
i guess a motec must be worth 20-30hp? my fully built m50 (minus motec) is in the same range as bruce's...191 rwhp.
 
Do me a favor - list everything to had done to your engine to make it 'fully' built. I would think you should have no problem with this - I think your motor is underbuilt...I have seen dyno sheets in the 208 range before MOTEC.

AB

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Andy Bettencourt
ITS RX-7 & Spec Miata 1.6 (ITA project)
New England Region R188967
www.flatout-motorsports.com
 
the list would be long. the short version is that it was complete rebuild by a very well known successful specialist in bmw racing engines. work order was for maxed out legal its engine. only option box i didn't check was motec. it was tuned on a mustang dyno.
 
Originally posted by GKR_17:
That dyno sounds optimistic to me.

Grafton
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Understandable. I doubt it however. This was one of the top 3 cars at the 2002 ARRC before the ballast issue took it out.

I think this is why some of the top engine builders in the country are in business. They just do it better.

AB

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Andy Bettencourt
New England Region, R188967
ITS RX-7 and ITA project SM
www.flatout-motorsports.com
 
Originally posted by chuck baader:
WHINE, WHINE, WHINE. If memory server me right, BMW won the ARRC last year, but someone tell me where in the country has this car "dominated" the ITS class. At the SIC the RX7s were first and second, and from what I read here, they hold most of the track records around the country. Prehaps weight should be added to them and the ZX since it wins too. My opinion is that nothing will change. That's my bet and I'm sticking to it.
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SO-PAC DIVISION DRIVER,JOHN NORRIS 95%+ OF RACES ENTERED.
http://www.calclub.com/html/html2/2004/200...ts_10_10_04.htm



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Daryl Brightwell
ITA RX7 #11
NORPAC
ITA RX7 #77
SOPAC

http://www.calclub.com/gallery/showphoto.p...m&cat=500&page=

EP this summer
 
Originally posted by GKR_17:
That dyno sounds optimistic to me.
Grafton
Click to expand...

I would think that completely in the realm of possibilities. The motor is 189 as delivered from the factory, at the crank? Open the exhaust up, pay attention while building, port work/matching, 0.5 compression hike - no doubt the cars could make 220 at the crank I would think, easily. Add in some fancy tuning playing with timing/fuel/VANOS and rev limits I'd suspect that 230 is possible, and more.

There are a couple of street 325s that have been dynoed at the shop on a dynojet and have nice numbers on the board the shop keeps. Chip, intake, full exhaust and these fellows are making 185 and 193 at the wheel. That seems to indicate about 210-220 or so at the crank. Pretty good for not opening the motor and doing anything.

Strong motors with lots of possibilities. What happens when the 330i comes? Wasn't it 225 at the crank? Some are five years old very soon...

Ron


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Ron
http://www.gt40s.com
Lotus Turbo Esprit
Ford Lightning
RF GT40 Replica
Jensen-Healey: IT prep progressing!
 
I'm still surprised that this wasn't in the Dec. FasTrack. Plenty of other reclassifications w/ weight adjustments. If the E36 wasn't the poster child for PCA's, I don't know what was. Would seem like that was the first car that would be addressed, once PCA's were approved.

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MARRS #25 ITB Rabbit GTI (sold) | MARRS #25 HProd Rabbit
SCCA 279608
 
Originally posted by mlytle:
i guess a motec must be worth 20-30hp...
Click to expand...

I just don't buy that any particular engine management system alone is going to make that much difference, relative to other options that get the big stuff right - like killing vehicle speed or rev limiters.

Over stock? MAY-be.

K
 
Originally posted by Bill Miller:
Would seem like that was the first car that would be addressed, once PCA's were approved.
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You are forgetting the lag time of events here...

All of those reclassifications that were approved "pending" PCAs were recommended and announced earlier in the year... so they were already on the schedule...

NOW that PCAs ARE officially approved... we can start applying them where applicable... but there is still a lead time once a recommendation is accepted by the CRB... usually at least a month or so...



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Darin E. Jordan
SCCA #273080, OR/NW Regions
Renton, WA
ITS '97 240SX
DJ_AV1.jpg
 
Daryl. Thanks for the props. But the numbers decive. Yes, I won every race in Cal Club, but look at the lack of competition. Bryan Lampke came in second. He's a good driver but he's driving a 240z on Toyos. I did venture out of region once to Laguna Seca and got beat twice by Randy Evans. And what does he drive? Why it's a second generation RX7!
I will agree that the 325 is a great car ( I love mine) And thanks to Bimmerworld it's very well prepared, I still think a well preped, well driven RX7 is a match for the BMW.
I hope to see you next weekend at the Western States Championships. I'm coming up and I'm prepared to get spanked.
John Norris
 
Originally posted by 7'sRracing:
SO-PAC DIVISION DRIVER,JOHN NORRIS ...
Click to expand...

Unrelated to anything in this conversation...

When I purchased my 240SX, I took it home and the first thing I did was scrape John's name off the side windows...

Apparently, he was partially responsible for beating the crap out of it in some enduro for a Road & Track article that was being done, just prior to me purchasing the car!
wink.gif
 
Hey that was a fine car, only driven on Sundays. Good to see it's still working for you. I occaisionally get to drive the sister car we built for Automobile magazine. Great car.
Cheers.
John
 
I'd seriously consider swapping our full load Sunbelt M54 WC motors for these 235whp M50's you guys are talking about....Someone needs to recalibrate their dyno.
 
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