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  1. #26
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    Click here to enlarge Originally Posted by GG///M3 Click here to enlarge
    When you get the car back we want to see it done. Click here to enlarge
    Big problem I see is going to be the drivetrain. The first problem is the wheel/tire combo's available. Simply put there just isn't any great solutions available. The other issue is the rear differential housing. When you really look at how it is mated up to the chassis, it just doesn't seem like it's going to be able to handle a hard hole shot. These cars have had problems with frame rail cracking under normal driving conditions, now add in 700+ HP hard launches. The only way to really put the power down is going to be slicks and that opens up a whole new can of worms as far as stress on the driveline.

    The other weak point is the transmission and r&p gearing. It just doesn't seem geared properly for drag racing. If you watch EviltwinRob's 1/4 mile videos you will see that the car is at the extreme top of 4th when hitting the traps. The 137 MPH trap speeds are normally associated with cars running in the mid 10's.

    I honestly believe the only way an E46 M3 is going to run 1/4 mile time that more closely matches a 700+ HP car is through the use of a SA and 3 speed auto like a TH400.

    Now where I think a HPF M3 can really shine though is going to be in mile racing like at the Texas mile. I believe the gearing is probably perfect for that. I mean hell, your already at 137 MPH in 1/4 mile.

  2. #27
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    Click here to enlarge Originally Posted by ccsykes Click here to enlarge
    Big problem I see is going to be the drivetrain. The first problem is the wheel/tire combo's available. Simply put there just isn't any great solutions available. The other issue is the rear differential housing. When you really look at how it is mated up to the chassis, it just doesn't seem like it's going to be able to handle a hard hole shot. These cars have had problems with frame rail cracking under normal driving conditions, now add in 700+ HP hard launches. The only way to really put the power down is going to be slicks and that opens up a whole new can of worms as far as stress on the driveline.
    Exactly, the rear end needs to be addressed somehow but that may make the car one dimensional which is not what E46 M3 owners want. This is why 60-130's and traps tend to tell the story and roll on's/top end is the area of strength.

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  3. #28
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    If you want to run a 9sec you will need more torque,why are most people only looking at whp because on the drag strip torque is a lot more important.

    I also do not understand why the HPF Kits/S54 turbo engines has less torque as a turbo S50B30/32.
    Last edited by daytonaM3; 01-28-2011 at 02:28 PM.

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    Click here to enlarge Originally Posted by daytonaM3 Click here to enlarge
    If you want to run a 9sec you will need more torque,why are most people only looking at whp because on the drag strip torque is a lot more important.
    It depends, plus hp and torque are a function of one another.

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    It depends, plus hp and torque are a function of one another.
    Thanks guys.

    The first customer to set up their rear end for drag racing will easily be in the 10's and there is enough power there to get into the 9's for sure. Click here to enlarge

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  6. #31
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    Click here to enlarge Originally Posted by daytonaM3 Click here to enlarge
    If you want to run a 9sec you will need more torque,why are most people only looking at whp because on the drag strip torque is a lot more important.

    .
    LOL, dude honda's make less tq than these cars and are in the 9's thats not the factor here...


    Its GEARING that makes it all work... F1 cars make low ass tq yet they are fast as hell, how do they do that? RPM + GEARING....

    In all honesty you want to be at the top of 4th when crossing the line... Problem i see is if Rob was at top of 4th @ 137 then the higher powered cars will need to shift into 5th which will hurt the ET/MPH... Taller tires or changing the final drive will take car of that, or rev those motors out!

  7. #32
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    Click here to enlarge Originally Posted by gringotegra Click here to enlarge
    Its GEARING that makes it all work... F1 cars make low ass tq yet they are fast as hell, how do they do that? RPM + GEARING....
    Yes, and the S54 has a long powerband and tight gearing.

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    In the V8 Auto world, anything trapping over 135 should technically be in the 9's....Thats why when you go over 135 they require you to have an NHRA license... Very few, and i mean Very few manual cars actually run 9's@135...

    and holy $#@!, Evil Twin Rob's car made 724whp? was just checking out his vids, damn...

  9. #34
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    Click here to enlarge Originally Posted by gringotegra Click here to enlarge
    In the V8 Auto world, anything trapping over 135 should technically be in the 9's....Thats why when you go over 135 they require you to have an NHRA license... Very few, and i mean Very few manual cars actually run 9's@135...
    It's all in the suspension at that point. Cars like the M3 are set up for the road course and the stiff suspension and front engine layout works against them.

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    I should correct mysely, in the Auto world in general not just V8 Auto world...


    I would say that the gearing with the M3 isnt hurting it then...

    Can anyone point me in the direction on where i can see the gear ratios + Rear end ratio of the m3?

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    Click here to enlarge Originally Posted by gringotegra Click here to enlarge
    Can anyone point me in the direction on where i can see the gear ratios + Rear end ratio of the m3?
    Here:

    1st Gear Ratio 4.23:1 2nd Gear Ratio 2.53:1
    3rd Gear Ratio 1.67:1 4th Gear Ratio 1.23:1
    5th Gear Ratio 1.00:1 6th Gear Ratio 0.83:1
    Final Drive Ratio 3.62:1

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    Click here to enlarge Originally Posted by daytonaM3 Click here to enlarge
    If you want to run a 9sec you will need more torque,why are most people only looking at whp because on the drag strip torque is a lot more important.

    I also do not understand why the HPF Kits/S54 turbo engines has less torque as a turbo S50B30/32.
    The HPF kits are putting down plenty of TQ. The Stag 2.75 puts down 550+, that is more than enough given the HP.

  13. #38
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    Click here to enlarge Originally Posted by gringotegra Click here to enlarge
    In all honesty you want to be at the top of 4th when crossing the line...
    Yes, but not with 3:62's. If I'm correct that is what Rob is using. Most drag cars are running 4:30-4:56 to get into the top of 4th.

    Yes, you are correct that you want to be in the top of the gear, but the final gear ratio is not optimal. The transmission gears are too high. That is why you have a high MPH but a lower ET.

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    Click here to enlarge Originally Posted by ccsykes Click here to enlarge
    The HPF kits are putting down plenty of TQ. The Stag 2.75 puts down 550+, that is more than enough given the HP.
    There is plenty of power and torque, that is definitely not the issue.

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    Click here to enlarge Originally Posted by ccsykes Click here to enlarge
    Yes, but not with 3:62's. If I'm correct that is what Rob is using. Most drag cars are running 4:30-4:56 to get into the top of 4th.

    Yes, you are correct that you want to be in the top of the gear, but the final gear ratio is not optimal. The transmission gears are too high. That is why you have a high MPH but a lower ET.
    Interesting enough, i just threw in the numbers for the M3's gears into a calculator i use alot for my car..

    i compared it to my transmission which is well geared quite well for the 1/4.. i used the stock tires for the M3 255/35/19..

    http://www.teammfactory.com/gearcalc...ission+1+%26+2

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    Its not as bad off as you might think... its almost identical to mine as far as mph in each gear..well more like 3rd/4th... i think they would benefit from a taller 1st/2nd gear tho

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    Click here to enlarge Originally Posted by gringotegra Click here to enlarge
    Its not as bad off as you might think... its almost identical to mine as far as mph in each gear..well more like 3rd/4th... i think they would benefit from a taller 1st/2nd gear tho
    And that is where the E46 M3 doesn't do well. Maybe HPF can make some taller gears for 1-2. They are planning on making syncros for the tranny. I don't know whether the investment in tooling would pay off though. Not sure how popular drag racing an M3 is going to be. They seem to be more popular on the road course.

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    Click here to enlarge Originally Posted by ccsykes Click here to enlarge
    They seem to be more popular on the road course.
    Or the dyno Click here to enlarge

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    Click here to enlarge Originally Posted by ccsykes Click here to enlarge
    And that is where the E46 M3 doesn't do well. Maybe HPF can make some taller gears for 1-2. They are planning on making syncros for the tranny. I don't know whether the investment in tooling would pay off though. Not sure how popular drag racing an M3 is going to be. They seem to be more popular on the road course.

    It would benefit from it but my car will also benefit from a taller 1st gear... as is the M3 should be able to do it..


    Is 8000rpm the highest these can rev? The seem to have a good flowing head, does anyone make better valve springs for them?

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    1 out of 1 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by gringotegra Click here to enlarge
    Is 8000rpm the highest these can rev? The seem to have a good flowing head, does anyone make better valve springs for them?
    I had these built for my HPF motor.

    http://store.vacmotorsports.com/vac-...ead-p1340.aspx

    I opted out of the port work though because I felt it unnecessary for an F/I application.

    Click here to enlarge
    Click here to enlargeClick here to enlarge

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    ^ Are you planning on revving it higher or did you just do it as a precaution?

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    Click here to enlarge Originally Posted by gringotegra Click here to enlarge
    In the V8 Auto world, anything trapping over 135 should technically be in the 9's....Thats why when you go over 135 they require you to have an NHRA license... Very few, and i mean Very few manual cars actually run 9's@135...

    and holy $#@!, Evil Twin Rob's car made 724whp? was just checking out his vids, damn...
    Rob's car did 724rwhp for 1 glory dyno pull and then they turned it way down before delivering it back to him.

    The 137mph trap speed was due to faulty timing equipment at the dragstrip he visited: http://www.bimmerboost.com/content.p...raps-disproved

    Rob's actual trap speeds are ~132mph after timing equipment was fixed/replaced.

    Nothing against Rob--he is a very stand-up guy and was a victim of poorly maintained track equipment.

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    A 630 whp s4 that weights 3600lbs went 10.50s at 140 with a 1.8 sixty foot if a hpf car with 740whp only trapped 137 something is up. A 1.8 sixty foot can be achieved fairly easy even if the diff is like glass. Ive seen z06s roll off the light like there at a stop light and make 1.8 sixty foots on street tires. Look MHP's 10 sec C63 only cut a 1.8 sixty foot and ran tens at 130 with a lot more weight and about 200whp less then evil robs car.

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    Click here to enlarge Originally Posted by 600whp S4 Click here to enlarge
    A 630 whp s4 that weights 3600lbs went 10.50s at 140 with a 1.8 sixty foot if a hpf car with 740whp only trapped 137 something is up. A 1.8 sixty foot can be achieved fairly easy even if the diff is like glass. Ive seen z06s roll off the light like there at a stop light and make 1.8 sixty foots on street tires. Look MHP's 10 sec C63 only cut a 1.8 sixty foot and ran tens at 130 with a lot more weight and about 200whp less then evil robs car.
    3600lbs and went 140 traps with only 630whp?

    i call bs, either its lighter than that, made more power than that, track was messed up or it did 630 through an Auto...? The power to weight does not add up to that trap...

    A 650whp Evo that weighs the same will do mid 130's...well i guess they weigh more like 3400-3500 but still... Hell a 600whp new Z06 will trap 132-134 and they weigh alot less than 3600
    Last edited by gringotegra; 01-28-2011 at 05:04 PM.

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    Click here to enlarge Originally Posted by DakarE36 Click here to enlarge
    Rob's car did 724rwhp for 1 glory dyno pull and then they turned it way down before delivering it back to him.

    The 137mph trap speed was due to faulty timing equipment at the dragstrip he visited: http://www.bimmerboost.com/content.p...raps-disproved

    Rob's actual trap speeds are ~132mph after timing equipment was fixed/replaced.

    Nothing against Rob--he is a very stand-up guy and was a victim of poorly maintained track equipment.
    ahaaaaa, that brings up some very interesting points lol...

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