Swap 1/4 Mile Thread

[lga714]

Just saw this vid posted on Emotech, impressive time!

12.90 @ 104

http://www.youtube.com/watch?v=XR3TqFuZAb0

Mods?

[Wh33lhop]

4-door e30 1988. with m50b25tu+m52b25 crank and rods... 75% interior removed, Toyo R888 at 14.7psi with ZF e34 tranny and 3.65 S diff...

Best time: without reaction 13.868
with reaction 14,308

Couldn't connect good reaction with good pull ;)

Why M52B25 internals? Stroke is the same, are the rods a bit longer or something?

[e30polak]

Just saw this vid posted on Emotech, impressive time!

12.90 @ 104

http://www.youtube.com/watch?v=XR3TqFuZAb0

[mega_t2008]

hehehe... In our country your time is ET+RT, so if I race with someone who has a for ex. 14,5 ET and 0,500 RT his time is 14,5 and if I drive with 14,3 ET and 0,800 RT my time is 14,3 + 0,3 so 14,6 and I lose... And 0,500 is the best reaction which you can have, everything earlier is RED LIGHT and automatically disqualification...

So, on that 14,308 run my ET was 13,868... And RT was 14,308-13,868=0,440 so I had a 0,500+0,440 and that is 0,940...

[jahnaboi]

4-door e30 1988. with m50b25tu+m52b25 crank and rods... 75% interior removed, Toyo R888 at 14.7psi with ZF e34 tranny and 3.65 S diff...

Best time: without reaction 13.868
with reaction 14,308

Couldn't connect good reaction with good pull ;)

Like everyone else has said. Reaction time has nothing to do with Elapsed Time (ET).

What you are running is 14.308 with or without reaction time.

[Jean]

Reaction time doesn't matter dude :)

[Raxe]

Something is wrong with the ^ s38, maybe it needs some coffee? lol.....

I'm probably the one who needs the coffee hahaha, maybe then I could get a halfway decent reaction time. Honestly I'm just nervous about breaking it with hard launches; a broken S38 is a broken bank account.

[Jean]

Something is wrong with the ^ s38, maybe it needs some coffee? lol.....

[SamE30e]

Trap speed?

Stock cams?

How'd you like the R888 for launching? I had to take my V710's down to 15lbs or so, and they hooked like hell, but chunked pretty bad.

You don't factor in reaction unless you're doing bracket racing. For test and tune you could sit at the lights for a minute and it wouldn't matter. At least thats how our track does it.

[mega_t2008]

I don't have trap speed... It wasn't there on the time slip... Cams are stock... Tires slipped a little in 1st gear but for the RWD it's ok :) And, these are 205/55R16...

[JGood]

4-door e30 1988. with m50b25tu+m52b25 crank and rods... 75% interior removed, Toyo R888 at 14.7psi with ZF e34 tranny and 3.65 S diff...

Best time: without reaction 13.868
with reaction 14,308

Couldn't connect good reaction with good pull ;)

Trap speed?

Stock cams?

How'd you like the R888 for launching? I had to take my V710's down to 15lbs or so, and they hooked like hell, but chunked pretty bad.

[mega_t2008]

4-door e30 1988. with m50b25tu+m52b25 crank and rods... 75% interior removed, Toyo R888 at 14.7psi with ZF e34 tranny and 3.65 S diff...

Best time: without reaction 13.868
with reaction 14,308

Couldn't connect good reaction with good pull ;)

[skatebline]

single is fine, it's the rebound adjustment you want.

Ok. ill go with those and let you guys know how it works out for me. thanks

[digger]

trapspeed is also slow

[Adrian_Visser]

I never thought anyone would say disappointing and s38 in the same sentance I must admit I am surprised.