How much do you think it would cost to completely rebuild my engine

I want to put dual 40's on with a 292 cam or possibly turbo it

What is your set up and how much did it cost you to get it there?

How much HP do you want and how much $$ do you have to spend? HP cost's $$$ no way around that.

Have you considered programable EFI?? WAY better than carbs for HP and driveability.

I run a 2.0L m10 with a 272 cam, programable EFI, and custom header/exhaust. It runs WAY stronger than it has a right to!

ken

How much HP do you want and how much $$ do you have to spend? HP cost's $$$ no way around that.

Have you considered programable EFI?? WAY better than carbs for HP and driveability.

I run a 2.0L m10 with a 272 cam, programable EFI, and custom header/exhaust. It runs WAY stronger than it has a right to!

ken

How much is your car making? I want to hit around 200 with carbs.

Have you worked a little on the short block? rods, pistons etc? Ported head... Just wondering, those are very good ways of getting more power and definitely a nice compliment to header/exhaust.

The bottom end is stock 2.0L crank/rods/pistons- they are very good as they come. No hp to be gained there unless you up the compression with aftermarket pistons.

The PO said the head was mildly ported but when I built the header and installed the EFI I could not see any evidence of that.

This engine is actually quite mild but I have easily out run a tii and 323i with my e21. Once I get a couple more additions - crank triggered ignition, individual 40mm throttle bodies, rocker lock collars and head freshing -completed I will get it on a chassis dyno. I'm expecting 150hp at the wheels. I would guess it makes nearly that at the flywheel now. Once this project is done I will quit persuing m10 hp and install a m50/m52 in my other e21. 200hp smog legal is pretty cool and when I get out of CA in a few years I will be able to make some really big HP.

200hp with carbs from a 2.0L would not likely be fun to drive on the street and would likely be a pretty finicky engine. EFI makes life much better and makes HP easier than carbs. Stroke it to 84mm with a s14 crank and bore it to 92mm and it's a little easier to get 200hp.

Big HP is not cheap...

ken

150 at the wheels is very very great for the street, good luck with that!!! I just finished some head freshening on my car and I put on some new while leaving some stuff that was done before. The head is ported to race specs, which is probably overkill, the cam has been reground to 284, dual valve springs are still good since they only have 15000 miles on em, stainless valves are still good, new rocker shafts, new rockers, rocker lock collars, new guides as it was burning too much oil, and a nice set of new gaskets, ahhh fresh is good!!! I have a 38/38 carb on the car abnd 44 mikuni sidedrafts off of it, but probably won't change them in until gas prices decide to go down, but at least it will run strong until I can do that and make a cold air box for them after I install the tii booster of course.

You think gas prices are going to drop??? Not significantly, expect $3 per gal to be a good deal by the end of summer... By 2010 (only 5 years away) expect $5 per gal and never going back. Makes EFI even more attractive-I can get 28mpg if I keep my foot out of it! But what's the fun of having power if you never use it?

I think 150hp at the wheels will be fairly easy-the EFI and custom header make a world of difference. BTW, I forgot to mention in the upcoming work is a new header-that will start this weekend.

Back to the original post: If you run a 292 cam you will need to raise the compression to at least 9.5-1 or it will be a pig. You will likely need 45mm carbs and a very good header/exhaust with that combo. Done correctly you could get 175hp from that combo but it won't be cheap. Korman or Top End Performance can build you an engine. There may be others too. Hell, I can build that engine-it's not rocket science, just attention to detail.

ken

But what's the fun of having power if you never use it?
ken
That's the problem I am always on it! Well, maybe I shall consider injection, I have some old pm's that you sent me and I will take a look at those to see what I will do.

What parts did you use for the EFI? an m42? Id like to know.

I know this is pushing it, and it probably has some extreme camshaft, but this carbed dry sump m10 makes over 250 hp. I can only imagine the amount of work that went into it. I asked about it a couple weeks ago on the FAQ.

http://www.apexengineering.com/02/engine2.jpg

I used a e30 318i intake-it is esentially the same as the e21 1.8L intake but has holes in the manifold for electronic injectors-the e21 1.8L has the CIS injectors in the head. I used a Weber 52mm throttle body and a MegaSquirt ECU. Check my website at www.e21motorsports.com/kendanielson go to the '82 320is page and click on the EFI link to see the system.

A bored/stroked racing engine with HUGE compression and HUGE cam might approach 250hp but it would never live on the street. It looks very well done, dry sump is cool stuff.

ken

I know this is pushing it, and it probably has some extreme camshaft, but this carbed dry sump m10 makes over 250 hp. I can only imagine the amount of work that went into it. I asked about it a couple weeks ago on the FAQ.

http://www.apexengineering.com/02/engine2.jpg
I thought that was your motor for the second I saw it before I read the caption! :buttrock

Well, I just confirmed my ports have been slightly worked, at least gasket matched (opened up to the id of the intake and exhaust gaskets. How do I know? I just received my latest ebay score- an e21 casting head for $1 plus shipping... The ports on my running engine are the same as the gaskets and the ports on the newly arrived stock head are slightly smaller. This is the same casting I use on my engine.

The seller of the head said the guides were worn causing the engine to smoke. I just popped the valves out and found the guides to be in fine shape but the seals were all crispy.... Decent head, with minimal machine work it will be great on an engine...

I originally bought the head to make a header jig so I don't have to keep disassembling my car each time a fab a set of headers-that's a pain. This head is in pretty good condition. I'm tempted to port this head (yes, I do that too), shave it some, have a custom cam ground (I've had a cam design idea in my "future project" folder for over a year) and slap it on my engine. But then I'll want to upgrade the oil system and as long as I'm in it that far I might as well bore it to 92mm... it will never end-I'll build the header jig this weekend!

ken

Well, I just confirmed my ports have been slightly worked, at least gasket matched (opened up to the id of the intake and exhaust gaskets. How do I know? I just received my latest ebay score- an e21 casting head for $1 plus shipping... The ports on my running engine are the same as the gaskets and the ports on the newly arrived stock head are slightly smaller. This is the same casting I use on my engine.
Great find!

The seller of the head said the guides were worn causing the engine to smoke. I just popped the valves out and found the guides to be in fine shape but the seals were all crispy.... Decent head, with minimal machine work it will be great on an engine...
Mine was the exact opposite when I took it apart... junk guides and nice seals.

I originally bought the head to make a header jig so I don't have to keep disassembling my car each time a fab a set of headers-that's a pain. This head is in pretty good condition. I'm tempted to port this head (yes, I do that too), shave it some, have a custom cam ground (I've had a cam design idea in my "future project" folder for over a year) and slap it on my engine. But then I'll want to upgrade the oil system and as long as I'm in it that far I might as well bore it to 92mm... it will never end-I'll build the header jig this weekend!

ken
Haha! I would have bought it to practice porting, lol! A header jig off the car is a great addition to the toolbox! Oil system, keep us updated there!!! :buttrock

The price tag I heard for that engine was $12,000 and it was built specifically for a track car. That was built at the shop down in San Diego and it was to prove it could be done.

IMHO you can build bigger faster ponies from a six cylinder M20 2.7E block with an "i" head and still drive it daily without it being a radical dry sump setup for the street. Getting 200 hp is pretty easy, almost bolt in by changing cam and exhaust and EFI setup.

Here's the engine parts you need.

Building a 2.7e motor (http://www.e21bmw.net/graymarket/library/327i.php)

whats the weight difference on an m20 and an m10?

whats the weight difference on an m20 and an m10?

-I believe it is within 50 lbs (more, obviously) of a m10.