whipplem104

This is mostly cosmetic but they do weight a little less and the brakes are a little bigger than what I had.

Saijin_Naib

Look nice.
What are you running for brakes/wheels now?

Any other news/updates/info on your setup?

whipplem104

I had AMG wheels from a clk on it. These are Forgestars. 18X8.5 in the frt and 18X9.5 in the rear. The front brakes are c32 calipers with some modifications to fit the w124 and rears are still stock.
I have been building a new engine this winter. Custom CP pistons and polished and shot peened the stock rods. Still going together.

splinter

Wow! Very clean installation. Congratulations.

whipplem104

Thank you, I keep plugging away at it and always come up with something I would rather have done differently. Maybe some day I will get it were I want it. Right now it is getting close to being done for a little while if it stays together.

gorilux

Hi whipplem104. Great job, congratulations on your work.

I've installed a eaton m90 on my 260E m103 engine and I've been having problems with my serpentine belt. When I accelerate the car the belt tensioner tensions the belt, the problem is when the engine slows down, the tensioner damper takes too long to go back to the original position and it busted the supercharger bearings. Did you have the similar problems with your belt tensioner?

whipplem104

I have never had a problem with the bearings. I use to use the old style tensioner but I had a bolt through mine and it was fixed. I use the new style spring tensioner now and the only problem I have is when bouncing off the rev limiter the belt will hop sometimes.

whipplem104

I ran a 12.511 at 111.-- tonight. Very excited. Best trap was 113. And the 12.5 run I think I could have done better on had I pulled 3rd through traps.

Saijin_Naib

That is nothing to shake a stick at for a 22 year old 2.9l I6

the_widebody

that is brill, i just did a search and came up with this;

http://www.m3post.com/forums/showthread.php?t=126523

so it seems that the c63 and bmw m3 are tested in mags and run around 12.5, so well done.

Shoomakan

Wow. Impressed, I am. The Force is strong with you.

whipplem104

Thanks guys. I am pretty pleased. Need to throw some slicks on and get the headers done this year. Just need the flanges now to get started.

Shoomakan

I'm gonna go through this entire thread now, to learn what I can about your setup. Color me interested.

Got any other links anywhere with more info/pics on your work? I'd appreciate it!

Shoomakan

After reading through this, I'm still convinced a turbo setup is easier for me to install on my 3.0 M104, although I'm not sure how much easier an S/C on the 3.2 is. I'm going to check out a couple of 3.2's early next week.

The one thing about this that rings true is that I WANT torque at low RPM's, as most of my driving is done there. Even now, I don't usually shift past 5500 rpms. I just inherently don't like redlining this engine, I don't feel it likes it that much.

AMGDave

WOW!!!

You mentioned throwing on some slicks... are you running street tires now (not drag radials)? If so, check into the lightest race tires you can find. I'm using Hoosier DOT drag radials, they are super light weight compared to anything else (Nitto, BFG, MT, etc are all very heavy). If the car is hooking up with drag radials (or even street tires), you won't gain anything unless you switch to wheels or tires that weigh less.

Are you getting any wheelspin at all with your launch now? Also, what is your typical 60' time?

whipplem104

Dave,
This is with street tires. Continental all seasons even. I was running 2.0-- 60' but the 12.511 was with a 2.030. A little wheel hop on that run but not spinning. I have to throttle the launch and I pulled a lot of timing out of the map to reduce torque on the launch. Makes the car much nicer to drive that way also. Pretty tame throttle response. I am going to get some slicks soon and try and get a good 60'. I think that with headers and slicks and a few lbs of boost at the end I will be in the 11.-- for sure. Slicks should get me in the low 12.--s. I was also going to put my 17" tires on the frt with a smaller tire. If I could fit them still I would through on some 15". But overall not to bad as is with the setup I am running. Did you see Kynsi ran an 11.5 with his turbo setup over on the other forum?

RBYCC

The front rim size be it 15 or 17 doesn't matter.
You want to go with a tall narrow tire inflated to about 45-50psi
The taller the tire the more roll out time you have before you break the red light beam.
If you have great reaction time this may appear that you're a bit slower.
You could pick up about a tenth+ with a tall front tire and learning how much the tree will allow you to roll !!!

Below gives you an example of how much roll out you can gain:

Size Diameter Overall Rollout Overall
23.0x5.0-15 23.0 inches 72.2 inches
24.0x5.0-15 24.0 inches 75.4 inches
25.0x4.5-15 25.0 inches 78.5 inches
26.0x4.5-15 26.0 inches 81.7 inches
27.0x4.5-15 27.0 inches 84.8 inches
28.0x4.5-15 28.0 inches 88.3 inches

whipplem104

I just meant not having 225-35 18 on frt. They are wide and lots of drag.
The rims are not to heavy but tires are. A skinny 185 series tire would be ideal. I was thinking of a 215 or 205 on the 17" amg rims

AMGDave

Wow. If you get drag radials (or slicks - either one is fine) and can dial the torque back in at launch RPM, you should drop a tenth or two. It should get to 1.90, maybe 1.80 for the 60', but that will only drop your ET by a tenth or two (it doesn't add up additionally as you go down the track). A larger diameter front will help the rollout a bit, but again, this isn't going to gain you a huge amount. To run 11.9x you'll need more power on top of that, and/or less weight.

The 17" AMG wheels may be heavier than you think - could be 24-25lbs! You'll need to find the lightest weight wheel that still clears your brakes, then spoon on the lightest tire. The weight has FAR more effect than the width. Don't worry about wind resistance with a "wide" tire, you're only going fast enough for wind resistance/drag to do anything for a short period at the end of the strip (around 100mph); the weight makes a difference over the entire 1320'.

Didn't see the thread on Kynsi and the 11.5 time... got a link?

Shoomakan

I'll attest to that. Even driving around everyday, the difference in the car's acceleration was noticeable between the old Monoblocks and the Evo wheels.

It feels as if I installed a lighter flywheel, if that makes any sense at all... Felt the same as when I shaved the M30's flywheel.

I'd also enjoy a link about another turbo charged W124, if for nothing but entertainment.

whipplem104

Changed the shift points and got back to the track last night. Ran a 12.38 at 114 mph. 1.987 60'

rivcal4life

Wow! Nice times whipple! Makes me want to pick up an m104 car as a side project. Does the car FEEL like it will benefit from a pair or drag tires? I know my 500E definitely felt like it had a lot more in it than my street tires would hold. Drag radials proved that, taking me from a 13.161 to a 12.794. I expect they may not be as big of a difference in your car because your power curve will be a bit smoother as boost builds, rather than engaging all at once like nitrous does. Though, you are making much more power, so you do likely still have much to be gained. Good going man!

whipplem104

Absolutely drag radials would help. I can light the tires up anywhere in 1st gear at the track if I just mash it. On this last run I spun going into 2nd gear. I am throttling the launch a lot and only bring the engine up off idle to make sure it does not bog on launch. I think that if nothing breaks it is totally capable of cutting into the 1.7-- range on drag tires.

whipplem104

Here is the time slip. The other car is a supercharged CTS-V with drag radials.

Shoomakan

Link isn't working!