Rajicase's First Turbo Build, Ballin' On A (Nonexistent) Budget

[Butters Stoch]

The torque converter would lessen the chance of wheel hop but the issue would still be there. PEI330i said that his black car (caged) had no hop and the white car has hop (no cage). Different car but similar issues. Thats what got me investigating deeper into the issue. I'm sure that if I stiffen up the back and put drag radials on it it won't hop anymore. I'm willing to be the guinea pig on this one. I may put some 'kits' together if I have success.

I have 0 hop. Drag radials, toyo 888's and toyo r1r's I've ran.
Used to have it before I built the rear.

[PEI330Ci]

The torque converter would lessen the chance of wheel hop but the issue would still be there. PEI330i said that his black car (caged) had no hop and the white car has hop (no cage). Different car but similar issues. Thats what got me investigating deeper into the issue. I'm sure that if I stiffen up the back and put drag radials on it it won't hop anymore. I'm willing to be the guinea pig on this one. I may put some 'kits' together if I have success.

To clarify, the Silver car has no tie-in points on the top of the 4 subframe mounting points into a cage. However, the rear mounting points are tied into a subframe that was built into the trunk; I'm pretty sure they aren't moving. The front mounting points....I don't know what they are doing.

Before going nuts on the chassis, I'm installing linear position sensors on the rear shocks so that I can datalog the effects of different damper settings. (I have MCS 2 way adjustable rear shocks) If a full range of adjustments doesn't help, then we know that the issue is the chassis. At that point I'll have to decide if I'm going to put a 6 point roll bar into the car, and tie in all 4 subframe mounting points like I did in the Black car. My son won't be getting rides to school any more like that though....

[chikinhed]

The rear subframe mount points are not moving other than the subframe pivoting about them as the front moves up and down.

Butters, does your car have fold down rear seats?

[Butters Stoch]

The rear subframe mount points are not moving other than the subframe pivoting about them as the front moves up and down.

Butters, does your car have fold down rear seats?

Yes, coupe fold down seats.
I'll be honest, last time I had wheel hop I was running mickey Thompson drag radials. Then since then I stripped the whole rear out if the car.
Uuc rtab, uuc lower control arms, uuc bars (those were already installed long ago tho) new stock m3 bushings at the joints, powerflex subframe , then I welded up all the reinforcements subframe and rtab, DSS shaft and axles I built. I'm really happy I don't have hop, but I think Phil and Greg also have no hop either.
How bad is this hop you have ?

[pbonsalb]

Chikinhed has all the stronger parts you have that might help reduce hop. But he is running race tires that won't give and I don't think he has a line lock to heat them up so the stick. Maybe the result is that they hop more.

[Butters Stoch]

Chikinhed has all the stronger parts you have that might help reduce hop. But he is running race tires that won't give and I don't think he has a line lock to heat them up so the stick. Maybe the result is that they hop more.

Maybe thats it. Dunno

[rajicase]

Just went to the 1/4 mile! CSB vibrating like a mfer but decided to send it anyways.

Made three passes;
My best time was 12.6 pussyfooting off the line and my best trap was 134mph.

I'll post slips tomorrow I left them in my car. My car picks up 41mph on the back half. And I'm spinning the top of third, so I'm happy with that. I believe my time on the 134mph pass was 13.0.

I'm happy enough. Nothing broke. Cars running great. Everyone was stopping to talk to me about my car. Feels good.

[chikinhed]

134 mph was my best with the old set up at 24-25 psi. That was 660 whp at 3585 lbs (me and a full tank of gas) just to give you an idea.

[rajicase]

Yeah I was thinking I was low to mid 600s. I'm happy with that for now. Picking up 41mph on the back half not too shabby. Need to get my 210mm diff in and get a tire next.

[pbonsalb]

134 shows the car has some pull. I did 134 with a GT35R on S52 with stock cams. I later dyno'ed at 607 rwhp SAE Dynojet at 21 psi. I think with the S366sxe on an S52 tuned for e85 you will do much much better once you raise the boost. But you will also break stuff if you are drag racing with drag radials, like 188mm diff output stubs and stock driveshaft. Keep it a highway pull car and you will break less but you will still break zf320.

[rajicase]

Which wheel ya'll think would look better on the rear of my m3? Cant decide between the black and silver..

http://www.ebay.com/itm/15X8-VISION-...9YEl-x&vxp=mtr

http://www.ebay.com/itm/15X8-VISION-...5YL02L&vxp=mtr

- - - Updated - - -

134 shows the car has some pull. I did 134 with a GT35R on S52 with stock cams. I later dyno'ed at 607 rwhp SAE Dynojet at 21 psi. I think with the S366sxe on an S52 tuned for e85 you will do much much better once you raise the boost. But you will also break stuff if you are drag racing with drag radials, like 188mm diff output stubs and stock driveshaft. Keep it a highway pull car and you will break less but you will still break zf320.

I have a 210mm diff in my closet waiting to go in. About to situate a driveshaft. All will be going in soon along with a 15" wheel and some hoosier drag radials.

[milKt]

Congrats on your Hot Rodney run...without breaking anything more than your heart.

[rajicase]

Not heart broken at all. I'm happy.

[milKt]

Most people think they'll be MUCH faster

same with Dyno's

[rajicase]

Most people think they'll be MUCH faster

same with Dyno's

I was thinking I was making low to mid 600s. My trap confirms that. I'm exactly where I want to be.

[jakermac]

Damn! I did 2-3 13.1 @ 104mph passes last summer. And I gots not boosts! I think it'd be fun to line up against you. Make you sweat a little!!

[someguy2800]

hashtag street tire life

[chikinhed]

What was your 60 ft.?

[rajicase]

I don't know what my 60ft was they weren't working on the left side of the track.

Yeah I mean I'm spinning through the top of 3rd. When I get my rear end sorted and get a tire it'll be a lot better

[rajicase]

Damn! I did 2-3 13.1 @ 104mph passes last summer. And I gots not boosts! I think it'd be fun to line up against you. Make you sweat a little!!

You'd be the one sweating as I skated back and forth half way down the track lmao.

[chikinhed]

Damn! I did 2-3 13.1 @ 104mph passes last summer. And I gots not boosts! I think it'd be fun to line up against you. Make you sweat a little!!

I'll line up with you on his behalf

[Butters Stoch]

I'll line up with you on his behalf

Maybe GG's skateboard would be a better match for you.

Over the years of drag racing. I can tell you . ...... To pull the ET's to match the trap, well you gotta get out that hole like your trying to break it. Literally leave the hole with the intension on being towed home. In fact, if your shooting for a 10 second 1/4, go ahead and call the tow truck while your bolting up the drag radials. If you succeed you get your 10, if not, your getting towed. You go a head and try to spin a tire out the hole that you heated up enough to dead hook, and you know it. Then and only then will you have a 10 second slip. Like breaking bricks in karate, your either going to do it, or your hurting.

Good analogy Butters

Thanks Butters.

Your right you know

I know.

[jakermac]

You'd be the one sweating as I skated back and forth half way down the track lmao.

I'm OK with that. You'd be running me down so I wouldn't have to worry about anything till past the 1,000' mark!!

I'll line up with you on his behalf

- - - Updated - - -

And I'm looking at boost now!! It won't be in the same league as you guys but should be good for some mid-high 11s!!

[pbonsalb]

After you get the 11.49 or break 135, you can buy the roll bar, jacket, driveshaft loop.

[chikinhed]

When you start getting close to 11.49 or 135 mph just start lifting at the half way mark until you start getting consistently good 60 ft times and when you think you have it nailed then go for gold and get your 10 second run...... and get kicked off...... That's my plan.