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    85 or die

    Hello,
    e30 enthusiast here on my second e30. It is a 1985 318i with an unknown amount of miles on it. I bought the car about two years ago for 600 dollars and the odometer was stopped at 197,528. needless to say it is a fixer upper. When i picked up the car i knew that it was going to need a transmission, a brake light switch and other minor things (or so i thought). The first thing addressed was the transmission, beings that 3rd gear and second gear went out on me by the time i got home. Luckily i was able to pick up a used tranny for about 100 bucks from the local junkyard. I love half off sales. I then had a shop install it beings i was relatively new to working on cars and i wouldn't have known what to do. Because my dad knew people at the shop i was able to get it installed for about 200 dollars.



    About a month later the moonroof flew off of the car going down the freeway. Luckily I was in the slow lane and it didn't hit anyone. The bad part was that it rained for the next two weeks. So a trash bag was taped in its place... until i could pick up another from the junkyard.

    Other little things have gone wrong such as the throttle cable breaking, misc. little electric parts, idling issues, cold start valve, battery, alternator, motor and trans mounts, vacuum advance, locking system, and probably a little more.

    I have upgraded the seats with an aftermarket set made to fit with a custom bracket i designed and upgraded front brakes to 325i calipers and rotors.

    I was also fortunate to pick up a used m10 for free off of craigslist. I tore it apart and found that the head was cracked but kept the block. I later found another head. Beings that I am 21 and don't have an abundant amount of extra money, I decided to keep my rebuild simple and cheap. As much as i would love to install a turbo and have a speed demon, I just don't have the funds and i'd rather my first rebuild be pretty basic.



    I have already finished rebuilding the bottom end and it is completely stock, but with all new main bearings, rod bearings, piston rings, oil pump, oil pump chain, oil pump gear, timing chain, timing gear, timing rails, crankshaft gear, tensioner piston, and of course gaskets and seals. It has been really fun learning how to rebuild the block and I'm hooked. Now, something I have noticed is that most pistons that I've seen in m10b18's online are the piano top pistons which to my understanding have a compression ratio of 9.0:1. I believe that I have earlier model pistons that are domed that have a compression ratio of 9.3:1. Please correct me if I'm wrong because I wasn't able to find much info.





    Now I'm going to start working on the cylinder head. I figured to be a little more efficient and powerful this is where it really counts. Since its going to be a mild DD for now, and my main purpose is to just have a little more fun, I'm heading in the route of sending a camshaft to Ireland Engineering for a regrind to 284. I'd also like a set of dual valve springs but I'm not sure they're necesary or not. I am also planning on giving a try at port and polishing it to match the gasket. Then I planned on lapping the valves and polishing up some used ones.

    Any advice or tips that you can give me will be greatly appreciated. Besides minor things my car has been very good to me and hasn't serisously broken down on me once. It even passed smog with no problem. I'm happy to have an e30 and plan on keeping it forever.

    #2
    Sorry man i dont have advice for you. As im in a similar boat as im limited by funds and lack of torque wrench. Same section of r3v m10 board but one topic down. Literally posted by another guy.. Probally knows a fuckofalot more than me.

    [QUOTE=thebutterson;3610648]2002faq has all the info you'll need to build whatever m10. Here's some links





    The day I bought my e30, was the day I became sophisticated and classy as fuck.

    Comment


      #3
      Looks like fun Mike, don't run dual valve springs with the 284, run HD singles if you feel the stock springs are pretty worn and needing replacement.
      ADAMS Autosport

      Comment


        #4
        [quote=Rockwool2117;3611451]Sorry man i dont have advice for you. As im in a similar boat as im limited by funds and lack of torque wrench. Same section of r3v m10 board but one topic down. Literally posted by another guy.. Probally knows a fuckofalot more than me.

        Thanks for the links. The different pistons are interesting to look at, but i still don't see any pistons that match mine anywhere.

        Comment


          #5
          Originally posted by SkiFree View Post
          Looks like fun Mike, don't run dual valve springs with the 284, run HD singles if you feel the stock springs are pretty worn and needing replacement.
          So the HD springs must be better suited for the milder cam then. I also have questions for the mpg of the stock m10, and what the potential loss could be with my plans for the head. Any help is appreciated.

          Comment


            #6
            Originally posted by MikeM10 View Post
            So the HD springs must be better suited for the milder cam then. I also have questions for the mpg of the stock m10, and what the potential loss could be with my plans for the head. Any help is appreciated.
            Yes, Duals would actually wear out your engine significantly faster (especially if you go the shrick duals, their spring pressures are extremely high).

            Mileage is going to depend largely on your proposed intake setup. The 284 cam is pretty mild (i.e. streetable) and shouldn't effect mileage by itself by any more than a 1-2 mpg-ish (also dependent on how much of a lead-foot you have).
            ADAMS Autosport

            Comment


              #7
              Looks like you have the earlier 9.3 pistons. Check out this thread:




              What did you do for a rebuild, just new rings and bearings?

              What about engine management, are you just going to let the ljet try and deal with the new cam?

              Comment


                #8
                OK. Well would stock valve springs be fine for for this cam or should i just invest in the HD springs?

                Were there any issues with the 9.3:1 pistons besides crappy idle with the A/C on? and I have replaced all of the bearings, piston rings, oil pump, water pump, oil pump chain, timing chain, timing rails, chain tensionor, and all of the gaskets and seals.

                And I hadn't thought too far into the ecu to be honest. I was kind of hoping that I could make the L-jet work with some tuning.

                Comment


                  #9
                  Thank you guys for all of the help. It is greatly appreciated. :)

                  Comment


                    #10
                    Crappy idle with the domed pistons with AC on, never had that problem with my 318. Stock springs should be fine, I ripped out my rev limiter in the distributor and my stock springs and rockers held up great all the way up to 7k daily quite well. Unless you race and drive the absolute hell out of your car dual springs will be a bad mix, plus you won't like how they act with small performance cam and city driving. With the fact that you passed smog, I would not touch the tuning if I were you. If you want to tune cus of possible lean factors with the cam, try putting in m5x injectors made a big difference in my top end.
                    sigpic
                    85 swartz/metallic 325E
                    84 alpine 325E
                    85 zinnoberot 318i/R.I.P
                    84 Bronzit 318i/sold
                    purchase feed back here=http://www.r3vlimited.com/board/show...82#post3535282

                    Comment


                      #11
                      If you wanted to make the drive, my 85 318i is going to a pick'n'pull in riverside on Saturday. I'll be there Friday, but I have dual springs with the correct retainers in the head if you wanted to pull them.
                      85' 318i ~The Bronze Bomber (FrankenM10 with a Forced Future :wgaf:)

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