Help with some issues

[ibjettin]

I've been having one bad thing after another happen with my 02... To start I bought it with a rebuilt motor with high compression pistons (9.5:1?), dual weber 45's, crane ignition, tii distributor, 320i alternator, electric fuel pump, a schrick 292 cam, Pacesetter header, and 3" magniflow exhaust. It ran great! fast as stink, but i needed to tone it down to make it a more suitable daily driver. I replaced the dual webers with a 32/36 with a canon manifold, replaced the header with a factory cast manifold and it seemed to run ok from what I recall. Unfortunately I didn't drive it that much before I started having electrical issues, that turned out to be a failing voltage regulator. I replaced the regulator and the car drove like crap and would bog under load (high and low RPM's). It's fine when parked and revved but it seemed like when the second barrel would open the bogging would happen.. I tried everything with the carb and it seems to be functioning ok so i turned my attention to the crane thinking it was damaged with the failed regulator. I went to a vacuum advanced distributor and points but it still ran like crap and would bog. I replaced the spark plug wires and cap as well.

So here's my question(s)... Do i look into the carb as the issues? Fuel pump? Is it ok to run a 32/36 with a 292 cam? Exhaust too big? Or could this be a electrical issue caused by the failed regulator??

I know it's a lot to shoot out there and diagnose with what i provided, but i tried everything and just keep scratching my head...

[jerry]

i'll toss this out there for consideration:

a year or so ago i brought an OEM manifold to work to hog out the manifold to mimic the peanut manifold as used on a 38/38. I believe the Cannon manifold is also hogged out for use with the 38/38 carb.

the gearhead i talked with told me not to do it if i was intending to use it with the more common 32/36 carburetor. it had something to do with the draw of the air through the carburetor and some other comments i don't recall.

i took this person's advise at the time. just sharing what i heard. YMMV.

[Richard]

You have answered the question. A 32/36 cannot handle the 292. Confirm with C.D. Diesel. From your description its running lean...

[ibjettin]

Good point, the Canon was considered as one of the possible issues.

To add to the original post. It did at one point seem to drive much better when i first did the swap. I was just talking with a buddy and he did take a drive with me and thought it ran smooth.. I unfortunately am stuck thinking about the electrical issues and can't recall personally.

[Richard]

Go with a richer idle jet (like 3 or 4 sizes) You will know right away. Also a sync link would help even if the issue ends up being electrical...

[ibjettin]

yes, I was thinking of that depending on what other solutions might come up.

http://www.pegasusautoracing.com/productdetails.asp?RecID=6942

[M3M3]

put the 45's back on (or put 40's on it) and run 30-34mm chokes. it will be nice around town and still be quick when you want to drop the hammer.

putting a 32/36 on that engine is like putting run flats on an f1 car. ;-)

[ibjettin]

is anyone else running a 292 cam with a 32/36?

[Richard]

Save yourself some time. Email CD about the volume a 292 needs and what a 32/36 can deliver...He is the best in tech info....Really

[ibjettin]

I did quite a bit of searching and read over CD's prescription as well as other post on the topic.

http://www.bmw2002faq.com/content/view/62/32/

So I guess this is just the carb without running the Sync link? Is this also a stock manifold or would the Canon yield the same results?

[Timmer]

If you stay with a single down draft carburettor, the 38/38 I had on a '74 2002 with the 292 cam worked well; I bought the car with a previously rebuilt motor, 9.5:1, schrick 292. There was a 32/36 on her when I bought the car, shortly after, my brother and myself went ahead and decided to put on a new 38/38, only change we made were to the idle jets, I think stock were 55's, we went to 60's., still had a slight "lopey idle" but the car ran very well with the 38/38., we could have putzed around with the main jets and air corr.'s but never got around to it. That was a great car, we also put on a new tii exhaust manifold/stock exhaust system.

Tim

[ibjettin]

Tim,

Thank you for your reply. I will be picking up a 38/38 and giving that a go. Seems the best route to go with the 292 and cannon. Eventually I will go to a tii or shorty header.

Seems I'm not the only one with similar issues...

http://www.bmw2002faq.com/component/option,com_forum/Itemid,0/page,viewtopic/t,354802/

If you stay with a single down draft carburettor, the 38/38 I had on a '74 2002 with the 292 cam worked well; I bought the car with a previously rebuilt motor, 9.5:1, schrick 292. There was a 32/36 on her when I bought the car, shortly after, my brother and myself went ahead and decided to put on a new 38/38, only change we made were to the idle jets, I think stock were 55's, we went to 60's., still had a slight "lopey idle" but the car ran very well with the 38/38., we could have putzed around with the main jets and air corr.'s but never got around to it. That was a great car, we also put on a new tii exhaust manifold/stock exhaust system.

Tim

[Timmer]

I'd say you'll be pretty pleased with the 38/38 once it's all adjusted/dialed in. I'm pretty sure I bought mine ( this was back in the summer of 2001 ) from Paul/Matt when they were at Maximillian, could have been Ireland Engineering though also., as Jeremy sent me some jets for the 38/38. I did get the tii manifold from Max.

Tim

[mossyboy6]

is anyone else running a 292 cam with a 32/36?

I am, and im throwing on dual 40s soon. I can feel a huge amount of restriction from the 32/36.