Author Topic: Somewhat of a teaser... (Read 9499 times)

tim_s · « **Reply #30 on:** September 09, 2006, 02:07:26 PM »

Quote from: Febi Guibo

M47 crank and S50 pistons will get you to around 180 hp (give or take) ...a dasc gets a little more, but the torque curve is much wider... there's a dyno sheet of the DASC install in the grassroots motorsports mag..

would be suprised if it gave quite this much. for example, hartge's 2.1 with cams, flowed head etc gave 170bhp, TDI's 2l conversion, with cams and headwork gives 170bhp. mine didn't feel like it had 180bhp with just the 2.1 bottom end (sadly i never had it r/r)

Febi Guibo · « **Reply #31 on:** September 09, 2006, 02:34:13 PM »

Quote from: nickmpower

well the dasc was 189 i thought. and that was WHEEL hp

hmmm... could be...

http://www.downingatlanta.com/images/power&torque.PDF

on their comparison chart, the downing atlanta graph shows stock hp at right around 150 at 6500rpms, their unit at around 220hp... what did grassroots get on theirs? scan anyone?

tim: lol, I'm forever optimistic on the 2.1 L bottom end!

christophbmw · « **Reply #32 on:** September 09, 2006, 08:47:13 PM »

I havent posted in awhile but i do have a few questions.
My first questions is: If you bore the block out and put S50 pistons in with no M47 crank what kind of HP gains would I be looking at? just curious if anyone has done it without the M47 crank.

My second question is: Does a TMS, or Mark D chip effect the cars ability to smog in california, i know it has nothing to do with this thread but i figured i could get a quick answer, thanks!

dude8383 · « **Reply #33 on:** September 10, 2006, 01:26:32 AM »

Quote from: christophbmw

I havent posted in awhile but i do have a few questions.
My first questions is: If you bore the block out and put S50 pistons in with no M47 crank what kind of HP gains would I be looking at? just curious if anyone has done it without the M47 crank.

My second question is: Does a TMS, or Mark D chip effect the cars ability to smog in california, i know it has nothing to do with this thread but i figured i could get a quick answer, thanks!

i can't afford an m47 crank...so i will most likely be using the stock crank. Im not sure if its any gain, but i do have an m44 motor at my disposal as well.

tim_s · « **Reply #34 on:** September 10, 2006, 06:00:09 PM »

haha febi, don't get me wrong there's a lot of power to be had, and the 2.1 transformed the car, just not particularly in terms of peak power. it picked up so much better though and pulled so much more srtongly from lower rpms.

On the chip and smog issue, my car has ITBs, a 2.1 etc and the idle has only been tuned by me using my wideband and timing adjusted to get a nice idle. it makes very little emissions at idle, i was surprised by the margins by which it got through the MOT (yearly test) here in the UK.

dude, fwiw i'd stick in the m44 crank for that bit more displacement. although they're not fully counterbalanced etc, that also means they're light, and they're proved strong by the amount of guys with turbos etc not having any trouble. just my opinion, am sure you'll get just as many praising the m42 forged fully counterbalanced crank over the m44 one. guess it depends how high you're going to rev too.

christophbmw · « **Reply #35 on:** September 11, 2006, 03:41:00 PM »

Quote from: tim_s

dude, fwiw i'd stick in the m44 crank for that bit more displacement. although they're not fully counterbalanced etc, that also means they're light, and they're proved strong by the amount of guys with turbos etc not having any trouble. just my opinion, am sure you'll get just as many praising the m42 forged fully counterbalanced crank over the m44 one. guess it depends how high you're going to rev too.

I have another question, lets just say i wanted to put an M44 crank in my car, is that the only thing that increases the displacement on the M44......so it is basically a very MILD stroked M42, correct? What if i bored my block out, put S50 pistons in and an M44 crank, has anyone done this, I wonder what compression would be......just a thought.

tim_s · « **Reply #36 on:** September 11, 2006, 04:02:37 PM »

M44 has a bigger bore too. TDI sell a kit in the UK that brings the M42 out to 2l using an M44 crank and some bigger pistons.

shellback · « **Reply #37 on:** September 11, 2006, 04:23:47 PM »

I wonder what the cost difference would be?

M44 or M47 crank. S50 pistons, and the machine shop to bore the block...
vs.
DASC on the M42 and let 'er rip

dude8383 · « **Reply #38 on:** September 11, 2006, 05:07:20 PM »

Quote from: tim_s

haha febi, don't get me wrong there's a lot of power to be had, and the 2.1 transformed the car, just not particularly in terms of peak power. it picked up so much better though and pulled so much more srtongly from lower rpms.

On the chip and smog issue, my car has ITBs, a 2.1 etc and the idle has only been tuned by me using my wideband and timing adjusted to get a nice idle. it makes very little emissions at idle, i was surprised by the margins by which it got through the MOT (yearly test) here in the UK.

dude, fwiw i'd stick in the m44 crank for that bit more displacement. although they're not fully counterbalanced etc, that also means they're light, and they're proved strong by the amount of guys with turbos etc not having any trouble. just my opinion, am sure you'll get just as many praising the m42 forged fully counterbalanced crank over the m44 one. guess it depends how high you're going to rev too.

well then, thats a good idea! i have an m44 that i can use parts from so this is great. Do i need to have it counter-balanced?

Paired up with the s50 pistons (86mm) the crank will fit with no issues?

dude8383 · « **Reply #39 on:** September 11, 2006, 05:08:23 PM »

Quote from: shellback

I wonder what the cost difference would be?

M44 or M47 crank. S50 pistons, and the machine shop to bore the block...
vs.
DASC on the M42 and let 'er rip

the kits costs like $3500...if you could score an m42 dirt cheap, i think the boring and s50 pistons will be cheaper. BUT the DASC kit will give mo powa!!