Swap 1/4 Mile Thread

[SpecM]

Reaction time is irrevelent unless you're trying to beat the guy next to you. It has no effect on your 1/4 mile time or trap speed.

-Truth. The et clock doesn't start until your tire passes the line

[Brew]

Reaction time is irrevelent unless you're trying to beat the guy next to you. It has no effect on your 1/4 mile time or trap speed.

[e30polak]

it really depends on launch and reaction time when it comes to drag racing. i have yet to take mine to a track, but i already pulled almost a full car on an '03 carrera, by the time i hit 100. that was before i switched to my 3.25 diff, when i raced the porsche i was running a 3.73 which sucks ass with the ZF tranny. first is short and in effect useless(i.e i hit my 7200 rpm redline at 21 mph)...now i bet i'll pull a car and a half! i have an an s52, ZF off the same M3, 3.25 lsd, 24lb. injectors, 3.5" hfm, cold air intake, comforti chip for the mods, 6-1 turbo manifold as header with 3" exhaust all th way back (including a 3" vibrant high flow cat, a borla 3" race muffler as a resonator and a 3" vibrant muffler). if everyone here practices launching, and truly shifting perfectly, there is a world of difference. when it comes to drag times it's not just the car, it's mainly the driver :up:

EDIT: Wow. I now realize why people complained about my grammar...

[BMWSOB]

I will have some numbers soon hopefully! Just waiting on parts currently.

Donovan

[BingM3]

I ran my G-Tech Pro SS, best pull has been 14.26 with 18's staggered set-up BBS wheels. Some runs 15', guess the launch is the tricky part.

Crank HP 252hp

If I put 15 or 16's, I'm sure I'll do better numbers:)

[BingM3]

I think most people who run the 1/4 who expect to get into the 13's don't because launching an s50/52 in an E30 without wheelspin is not easy, and it affects your timeslip. Most have ran low-mid 14's.

However, driving it in highways is a blast at high gears.

[BingM3]

I think most people go for s50 and s52's based on engine reliability and ease, & inexpensiveness of the parts. So many parts are interchangeable with the regular E36.

I also heard that S50B30 has vanos issues on earlier model engines.

It is just as fast as an s50 on a straight line because of the gearing I believe, it looks cool to have the ind. throttle bodies though.

[Brew]

I think its fair to say the examples in this thread are on the low side of what the cars are capable of.

I know that mine would do low 13s with a good launch/driver.

[Jean]

Its a subject for another thread, but I'd recommend you save you money and go for an S50 or S52.

Man, for 4-5k I might as well build an m10 on a side and turbo it or save it for LS1 swap lol.

Honestly though, I am a little surprised with the numbers posted on this thread, throws me for a loop if I might add. Are these typical numbers or just bad examples ?

I am going to have to find some time slips for e36 325, 328, m3s and compare to get an idea. E30 should only be faster with any of the swaps and right gearing...

[FredK]

Yes, I suggest getting an S50 euro motor as well.



No, seriously.

An S50US runs around $2500. Add Schrick cams ($800 net, after selling the stock cams), software ($150 used), 24# injectors ($150), Euro HFM ($150), you are already at $3750.

Might as well get a Euro S50B30 for around $5k.

I'm half-kidding, half-serious.

[Brew]

Its a subject for another thread, but I'd recommend you save you money and go for an S50 or S52.

[Jean]

Yeah that is rather surprising, because people run mid to high 14s on bone stock E36 328is. Never mind those with an M50 manifold and S52 cams. The E36 weighs more, though I guess it has a quasi-multi link rear suspension.

Exactly. I've done a 14.2 @10x in a 100% stock r32 (240hp crank hp) that weights way way more than any e30. If m50 swap into e30 is only going to yield mid to high 15s then that's not the route I want to take..

[FredK]

Yeah that is rather surprising, because people run mid to high 14s on bone stock E36 328is. Never mind those with an M50 manifold and S52 cams. The E36 weighs more, though I guess it has a quasi-multi link rear suspension.

[Jean]

What's a better than average 1/4 time you can get with m50 swap (m52 intake/ S cams, basic bolt ons) in a early 318i chassis on 205-225 street tire (low 200 treadwear for example) with a 1.5-2.0 60' ?

I am kind of surprised to see low 15s, was hoping to see some mid 14s atleast. :(

[ed94r]

260/3.73 E30 M3 clutch.
Ronal 15X7.5
225/50-15 Falken 512's (Great tire IMHO)
34 psi all around.

I ran the car as I do on the street. 3/4 tank, full interior/AC, Stereo. 93 pump. Lift throttle shifting (I had to *make it home* 2 hours away).

With a few more runs, I'm sure I would have cracked a 1.9XX. Maybe a smidge better with less rear air, but I wanted less rolling resistance on the big end. I was after mph more than ET. I got neither :(

There was also an E36 M3/4 on Azenis that I forgot to mention. best of 14.4@95...

Ed