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  • Headwork?

    How good is the stock head on the S14? Does it need much work?

    Not to sure as I have a late spec head on my car anyway and I might already have port matched to the TB's as stock.

    This is in my plans while the car is in bits. I'm just wondered whether it is worth bothering or that there isn't much to be gain in doing so
    "It's not the mountain we conquer but ourselves"

  • #2
    If you aint up to some serious racing, you can leave youre head as it is. Its one of the best heads out there...

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    • #3
      It depends on your wallet. What's your budget, not including what you're having done?


      Disclaimer: Remember, I know absolutely nothing, but it doesn't prevent me from having an opinion or suggestion. :

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      • #4
        Are you saying that a simple increase in intake size a multi-angle valve job and pocket porting won't net anything?

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        • #5
          Ofcourse it will be gains by a multianglejob and so on. But thats what we in Europe call Group N (Showroom stock) or something like that. (A 20% powerincrease is often gaind in full Grp.N-mode. But this is together whit Grp.N chip, balanced crank etc etc. Just stockparts within the manufactures toleranses are alowed. This is an expencive way of gaining HP.)
          It isn´t "serious" headwork, its a finetune. And if you allready have disassambled the engine, then go for it! But take the whole engine apart just for some mild headwork i say no too.

          Or put it this way: It isn´t the best bang for the buck.

          I have helped a friend who was racing M3:s and before he changed for a 2,5 DTM-engine (The whole car acctually!) he was racing a "Homebuilt" 2,3 with mild, regrinded, stockcams, multianglejob to the seats, a "Alpha+ -like" system and a SE crank ending up with a 2,4 liter engine with 265hp an a massive grunt. The enginebuilder, who is vary wellknown here in Sweden, said that the head is one of the best, and serious work at it starts when youre about to start doing some serious racing.

          I would start whit a "Airflow meter removalkit". You gain some Nm and HP, but most off all you gain driveability and a mutch happier car to drive. Ok, they aint free those kits, but it really works. And youre S14 will sound like a DTM-car!!!

          Good luck!

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          • #6
            Oy M3Pilot!!!!! No more mods for you other than the Schricks, I'm gonna struggle to keep up as it is!!!:Apu:

            BTW Apu bears no relation to my reply but it made me laugh!!

            Comment


            • #7
              Well, since you alreday have most of the cool stuff stock, I would leave it be!

              So many times I have been told "the power is in the head".

              Now I beleive it. My head is close to stock only being port matched and big valves. I'm stuck at 215hp. I was told that if I went wild with my head it would be good for atleast 10more rwhp.

              Why don't you just put in the dam cams that you have been talking about for months, get it tuned and see where you are? I would wait for a headgasket or or head rebuild to port it out.

              Do not click
              At least it's German

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              • #8
                Originally posted by EVOIIIM3

                Why don't you just put in the dam cams that you have been talking about for months, get it tuned and see where you are? I would wait for a headgasket or or head rebuild to port it out. [/B]
                In all fairness to Martin, the reason he has been waiting to do the cams is he is planning on getting the timing chain done at the same time. Besides, don't hurry him up or I'll be wanting those cams as well and finances dictate otherwise at the moment:sosad:
                Last edited by DarranP; 12-21-2002, 05:14 AM.

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                • #9
                  Originally posted by EVOIIIM3
                  Well, since you alreday have most of the cool stuff stock, I would leave it be!

                  So many times I have been told "the power is in the head".

                  Now I beleive it. My head is close to stock only being port matched and big valves. I'm stuck at 215hp. I was told that if I went wild with my head it would be good for atleast 10more rwhp.

                  Why don't you just put in the dam cams that you have been talking about for months, get it tuned and see where you are? I would wait for a headgasket or or head rebuild to port it out.
                  Like Darran pointed out the reason the cams have taken such a long time comming is that I was waiting till I hit 100k miles.
                  This would also give me a chance to save the money for cams and the chain/rails to be all done at once.
                  Then the money that I did have saved got spent of the paint job so I had to start again. I'm nearly there now. So I figured while it was being done it would be a good time to get some headwork done too as all the top end will be in bits.
                  "It's not the mountain we conquer but ourselves"

                  Comment


                  • #10
                    Originally posted by EVOIIIM3
                    Well, since you alreday have most of the cool stuff stock, I would leave it be!

                    So many times I have been told "the power is in the head".

                    Now I beleive it. My head is close to stock only being port matched and big valves. I'm stuck at 215hp. I was told that if I went wild with my head it would be good for atleast 10more rwhp.

                    Why don't you just put in the dam cams that you have been talking about for months, get it tuned and see where you are? I would wait for a headgasket or or head rebuild to port it out.
                    Get rid of the airflowmeter and the gains you want will be there...
                    Its the single most restrictive part of the whole S14!

                    Comment


                    • #11
                      Originally posted by Andreas L
                      Get rid of the airflowmeter and the gains you want will be there...
                      Its the single most restrictive part of the whole S14!
                      I have a DTM CF intake with a MAXX computer wating to be installed!
                      Just need to come up with a few thousand for the install and tune.

                      Do not click
                      At least it's German

                      Comment


                      • #12
                        Just need to come up with a few thousand for the install and tune.
                        What? The only way you would need a few G's is if you were buying a stand alone and dropped it off to be installed and tuned. The MAXX unit is just a piggyback. Save a couple G's of the few G's you think you need, and just buy a stand alone WBO2 and install it yourself.

                        Comment


                        • #13
                          Originally posted by Andreas L
                          Get rid of the airflowmeter and the gains you want will be there...
                          Its the single most restrictive part of the whole S14!

                          They is talk of this. We where talking about get the UK guys togetehr and getting a GB on the Motec or maybe a Lenz EMS.

                          Whether it will ever happen I is another thing, but the cams and chains are first.
                          I'm looking at getting up to 230-235 bhp at the crank with this.
                          I should get about 190 RWHP

                          Everything is so much more expensive over here, the cams and chains is going to cost me about $5000. Which isn't exactly the sort of money I have lying around so it's taken me some saving.
                          And with the threat of loosing my job I don't exactly want to just bung it on a CC then worry about paying off the damm thing if that happens.
                          "It's not the mountain we conquer but ourselves"

                          Comment


                          • #14
                            Originally posted by EVOIIIM3
                            I have a DTM CF intake with a MAXX computer wating to be installed!
                            Just need to come up with a few thousand for the install and tune.
                            Sounds like the way to go!

                            $5000 för a pair of cams and chains!!! WOW... :2:

                            Comment


                            • #15
                              Originally posted by M_US_E30
                              What? The only way you would need a few G's is if you were buying a stand alone and dropped it off to be installed and tuned. The MAXX unit is just a piggyback. Save a couple G's of the few G's you think you need, and just buy a stand alone WBO2 and install it yourself.
                              Yea, install it my self. While I can do it, I do not want to....
                              1. I have a expensive motor in there
                              2. It cuts into the factory main harness.
                              3. I'm getting a custom burn chip with it.
                              4. They will be able to get more power out of it.
                              5.If they blow it up, I get a new motor for free

                              It's not like tuning a Split Second unit. Some people have not had very good luck doing it them self.

                              It's just much liablitay for me to do it.

                              Martin, $5g for timing chain and cam install? Does that includ the new chip burn?

                              Do not click
                              At least it's German

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