new FWD drag racing rule.

[IH8TEC]

Copied from deanis's post on nzhonda's

just been looking through this seasons nzdra rule book and saw this one on page 79:

5.40 all front wheel drive or transverse mounted.

Applications using a clutch and running 11.99 or quicker, shield must surround the bellhousing completely except for area of bellhousing adjacent to differential and axle shaft. shield may be multi piece, with pieces bolted together using minimum M10 class 8.8 bolts;may be attatched to engine and/or bellhousing mounting points. the sheild should be constructed as above. SFI spec bellhousing blanket acceptable in place of a shield.

this will only affect a few of the fwd cars as you must be below the 11.99ET but the way i interpret this you also must have one on every mitsi that runs that and that is A LOT of cars.

as far as i know they didnt inforce this at the last nightwars but it might not be long before we all end up like the rotary boys. no blanket, no racing.

there will be a few of us needing this, i will in the near future

[deanis]

there will be a few of us needing this, i will in the near future

i think i saw that on a tui billboard somewhere. perhaps you mean like starwars: a gallaxy in the future, far far away.

may as well put one on while your engine is out though!

[flygt4]

bet you it drops the number of evos a bit. other than that it would mostly affect the quicker turbo hondas and maybe the odd fwd toyota

what else is tranverse engine that you see a lot of running in the 11's?

edit: would affect mr2's as well?

[Bling]

edit: would affect mr2's as well?

Only if you do your run in reverse

[postfach]

edit: would affect mr2's as well?

Only if you do your run in reverse

perhaps i'm missing some obvious sarcasm here, but as i understand it, this would also include mr2s, since the engine is mounted transverse

[Bling]

yeah I was only joking...... forgot the [sarcism] tags that time

[IH8TEC]

i'm gonna have a talk to dean at work tomorrow, but what is the difference between say a s2000 that revs to 9.5k and might run a high 12, compared to say barry's car that goes to 8k and does a 10. are they basing this decision on rpm the cars get to? (ie rotaries), where do they draw the line....

rotaries i can understand as they rev pretty damn high some of them. and are KNOWN to go.

has anyone heard of a fwd flywheel going through the casing and possibly the firewall?

i dont get that they put in that rule, yet have no specifics on what grade material it should be, what thickness it should be, no diagrams of where exactly it's meant to cover.

so many questions, not enough answers lol

[snwtoy]

has anyone heard of a fwd flywheel going through the casing and possibly the firewall?

Yeah, if they've been incorrectly lightened they can be prone to that, especially if you're running a ceramic clutch which heats the hell out of them so they develop cracks.

[IH8TEC]

has anyone heard of a fwd flywheel going through the casing and possibly the firewall?

Yeah, if they've been incorrectly lightened they can be prone to that, especially if you're running a ceramic clutch which heats the hell out of them so they develop cracks.

i know it COULD happen, but has anyone ever seen pics of it happening in a fwd? i'm too too worried abotu how my car is, gbox is on passenger side anyway,

it seems to be like they havent' thought this rule through very much because they need to sort the finer details out.

or am i missing something

[Truenotch]

edit: would affect mr2's as well?

Only if you do your run in reverse

5.40 all front wheel drive OR transverse mounted.

That pretty much means MR2's aswell, but oh well , AW's are to slow for that and SW's always seem to blow up before getting there .

[Bazda]

what a pain in the A hole.
well my engines still out, I just put the gearbox back together 2nite, so i guess i'll try fidn more info in this stupid thing before I bolt it all back into the car

[Adamal]

So is this due to something happening or just forward thinking?

[Jdawg]

i'm gonna have a talk to dean at work tomorrow, but what is the difference between say a s2000 that revs to 9.5k and might run a high 12, compared to say barry's car that goes to 8k and does a 10. are they basing this decision on rpm the cars get to? (ie rotaries), where do they draw the line....

rotaries i can understand as they rev pretty damn high some of them. and are KNOWN to go.

has anyone heard of a fwd flywheel going through the casing and possibly the firewall?

i dont get that they put in that rule, yet have no specifics on what grade material it should be, what thickness it should be, no diagrams of where exactly it's meant to cover.

so many questions, not enough answers lol

Not just rpm's. It also includes the amount of HP/Torque you are putting thru the flywheel/clutch. The big bang doesn't just go thru the firewall, it will send shrapnel in all directions, including at things like fuel systems and even spectators

[barryogen]

has anyone heard of a fwd flywheel going through the casing and possibly the firewall?

Ages ago I had a video of this happening in a Toyota scion(I think) in the US at a drag day during staging.

It disintegrated, and threw shrapnel everywhere, the guy was fine, but the engine was shagged, had been shaken apart by the vibration of bits of flywheel that were left on it.

firewall had stopped the small bits, some of the larger bits went through, but missed the driver entirely.

Bonnet was full of holes, and tears from the large bits of metal thrown through it
It could definitly kill, the holes were rather large, and well embedded in roof of the car etc.

[flygt4]

ok we all know why they make you do it.

what i don't get is, what is the difference between a transverse engined car running under 12sec and a longitudal engined car runinng less than 12sec? (other than around 10mph )

[barryogen]

what i don't get is, what is the difference between a transverse engined car running under 12sec and a longitudal engined car runinng less than 12sec? (other than around 10mph :lol: )

where the flywheel would be disintergrating to?
Where does a longitudinal flywheel go if/when it goes... wouldn't it be at or slightly infront of the firewall, so much less likely to hit the driver(although more likely to hit those beside the car like spectators)

[IH8TEC]

rotaries have to i beleive, they have kevlar blankets, but thats about $3-400.

most rwd's if it goes bang it's gonna go right where your feet are.

[flygt4]

yeah my thinking was you're going to lose your feet or lower parts of legs in a longitudal setup.
in a 4age setup its just your passengers crotch and its a honda its your crotch.

i appreciate the point they are trying to make, but it doesnt seem to be consistent, and i'm sure there are more pressing safety concerns to be addressed in drag racing.

my pick would be externally venting wastegates inside engine bays. theres a whole lotta flames and heat coming out of those things , and loads of flammable stuff around the engine.

[TTEETT]

Check this out!

[Truenotch]

Rotaries are really bad for it because apparently they only have 1 bolt flywheels....