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Re: NHRA require sfi engine diapers in 2019 ? [Re: merpar] #2625417
02/24/19 12:36 PM
02/24/19 12:36 PM
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Nevada
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merpar Offline OP
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I had the same engine failure in Vegas 2011. Except I didn't have a diaper. Same 10 qts of oil, but on the track. Hit the left lane wall jammed the steering. Went across the track and hit the right lane wall. It took me 7 yrs to build the car, 5seconds to wreck it. And another 7 yrs to rebuild. I will not go to the track without a diaper under my motor. Advise the same for everyone else. With 10 qts of oil on the track you have no control of your car. Think about it.
Another point, the pans with liners do not work! A friend with a fed had one. Blew his motor at March Meet two yrs ago. Oiled the track bad.

Re: NHRA require sfi engine diapers in 2019 ? [Re: pittsburghracer] #2625493
02/24/19 02:57 PM
02/24/19 02:57 PM
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mk_ Offline
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Originally Posted By pittsburghracer
Originally Posted By SSAHfan
Pittsburghracer...... do you know what brand yours is?



Greg told me today they are from J&J Performance.


http://jjperformance.com/NHRA-Accepted-Engine-Diapers_c5.htm


Thanks, will look into them

Re: NHRA require sfi engine diapers in 2019 ? [Re: merpar] #2625512
02/24/19 03:31 PM
02/24/19 03:31 PM
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We let rods out at a track... car was fine, but I vowed that I didn’t want to be “that guy” at a track ever again. Oildowns cost the track money and downtime for everyone. Do your part!

I have RusslerII diapers for both my engines.

Re: NHRA require sfi engine diapers in 2019 ? [Re: pittsburghracer] #2625515
02/24/19 03:39 PM
02/24/19 03:39 PM
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Canada
WO23Coronet Offline
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That's pretty good of your track guy to sell them at cost

Re: NHRA require sfi engine diapers in 2019 ? [Re: WO23Coronet] #2625529
02/24/19 04:03 PM
02/24/19 04:03 PM
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PA.
pittsburghracer Offline
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Originally Posted By WO23Coronet
That's pretty good of your track guy to sell them at cost





Yes it is and he’s a good friend but look at it this way. He made the rule at our track before the division officially did. It helps both him financially with track cleanups and us for wasted time waiting on cleanups and possible wrecks. Ohhhh ya we be-itched and moaned and some are still skirting the rule but it kicked us guys on the fence to finally put one on. I wish others would


1970 Duster
Edelbrock headed 408
6.143@110.85 mph
9.73@135.05 mph shifting at 6700 RPM
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: NHRA require sfi engine diapers in 2019 ? [Re: WO23Coronet] #2625543
02/24/19 04:43 PM
02/24/19 04:43 PM
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Fulton County, PA
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CMcAllister Offline
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Originally Posted By WO23Coronet
That's pretty good of your track guy to sell them at cost


Rice hull ash is expensive. Guy sounds pretty smart to me.


If the results don't match the theory, change the theory.
Re: NHRA require sfi engine diapers in 2019 ? [Re: DusterKid] #2625546
02/24/19 04:46 PM
02/24/19 04:46 PM
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Val-haul-ass... eventually
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Originally Posted By DusterKid
Originally Posted By merpar
I've heard NHRA will require engine diapers for cars 10:90 and quicker. If so at what point do they have to be sfi?


Did you just hear that or did you actually see it somewhere from NHRA?

I have the same question.

Re: NHRA require sfi engine diapers in 2019 ? [Re: merpar] #2625596
02/24/19 07:22 PM
02/24/19 07:22 PM
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Las Vegas
Al_Alguire Offline
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You do not need an SFI lower containment device until Pro Mod, Alky and Fuel classes. Otherwise you just need a diaper, NOT an SFI one. So in theory you should have zero issues with you expired SFI device.

According to the newest rulebook you do not need one unless you run Advanced ET, S/G, S/C or S/ST and Pro Stock, all non SFI required. Otherwise I don't see anywhere it is required other than those, and the aforementioned pro and alky classes.


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: NHRA require sfi engine diapers in 2019 ? [Re: Al_Alguire] #2625620
02/24/19 08:21 PM
02/24/19 08:21 PM
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68roadrunner Offline
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occasionally you see big bucks bracket race have the rule for a diaper, not sure if its enforced tho

Re: NHRA require sfi engine diapers in 2019 ? [Re: scottb] #2625625
02/24/19 08:44 PM
02/24/19 08:44 PM
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Otsego, mi. by Martin 131 stri...
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Otsego, mi. by Martin 131 stri...
Hey Scott I believe your referring to my wreck, yes Im a firm believer in diapers on any modified drag car, I did actually have one on the challenger but it was placed back to cover minor rear main leak,not covering but only third of the block,gonna cost me dearly to restore the wifes challenger, I had one on my daytona at pinks all out at martin 131 windowed the block, not a drop of oil on the track, every track should make them a requirement!!

Last edited by JT612GTX; 02/24/19 08:52 PM.

86 Daytona - 612/ glide - 2400lbs - 8.60 alot more left
71 S/G Challenger - 469/glide - 2800lbs - 9.20s and tuning
70 Challenger - mild 440/727 - 3475lbs - 10.96 best
70 GTX - future quick 16? more $$$$$$
Re: NHRA require sfi engine diapers in 2019 ? [Re: Al_Alguire] #2625642
02/24/19 09:05 PM
02/24/19 09:05 PM
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Fulton County, PA
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CMcAllister Offline
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Originally Posted By Al_Alguire
You do not need an SFI lower containment device until Pro Mod, Alky and Fuel classes. Otherwise you just need a diaper, NOT an SFI one. So in theory you should have zero issues with you expired SFI device.

According to the newest rulebook you do not need one unless you run Advanced ET, S/G, S/C or S/ST and Pro Stock, all non SFI required. Otherwise I don't see anywhere it is required other than those, and the aforementioned pro and alky classes.


It's mostly the tracks taking the lead on this with bracket racing. Can't blame them. Time and resources to clean up a mess. It's not like they all have their own Safety Safari.


If the results don't match the theory, change the theory.
Re: NHRA require sfi engine diapers in 2019 ? [Re: merpar] #2625665
02/24/19 10:06 PM
02/24/19 10:06 PM
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Great Neck,LI,new york
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Well I'm a bad boy.......which is better,the diaper or a belly pan?With my centerlink through the oil pan I was thinking a bellypan would easier to put on and take off.I could extend it under the trans as well.... work


HEMI-ITIS has no cure.
My condition is fully BLOWN!!
Re: NHRA require sfi engine diapers in 2019 ? [Re: hemi-itis] #2625680
02/24/19 10:46 PM
02/24/19 10:46 PM
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Cotati, CA
Dave Hall Offline
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Originally Posted By hemi-itis
Well I'm a bad boy.......which is better,the diaper or a belly pan?With my centerlink through the oil pan I was thinking a bellypan would easier to put on and take off.I could extend it under the trans as well.... work



Want to fab one on my two cars as well. A bent/welded alum. pan, 4 or 5 tabs with buttons, Gorilla tape it with pigs and you are done! I think covering the trans. should be mandatory in T/D-T/S. I've seen guys going 240 in T/D.

Re: NHRA require sfi engine diapers in 2019 ? [Re: merpar] #2625684
02/24/19 10:53 PM
02/24/19 10:53 PM
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Tulsa, Ok
WadeMetzinger Offline
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I run the J&J generic fit on both my 71 Cuda (rack, struts and custom headers so easy fit)and in my 68 Cuda (SB, stock front end, Milodon pan and TTI headers).

It was tight on the A body but worked fine and passed NHRA tech for Super Street.


Wade Metzinger 918-809-0987
71 Cuda 9.28@145 -1s, Pglide
68 Cuda 10.64@124 1.45 60's 318->390 eddys
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Re: NHRA require sfi engine diapers in 2019 ? [Re: CMcAllister] #2625853
02/25/19 01:18 PM
02/25/19 01:18 PM
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Las Vegas
Al_Alguire Offline
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Originally Posted By CMcAllister

It's mostly the tracks taking the lead on this with bracket racing. Can't blame them. Time and resources to clean up a mess. It's not like they all have their own Safety Safari.


I agree, everyone should have one and many tracks require it at 10.00. When I was in cali my business paid anyone who won S/Pro at Sonoma $100 if they had a diaper on their car for two years. I have run one for a very long time myself and we have scattered a couple engines and not put anything on the track.

But the OP asked about NHRA and SFI and that's where they stand


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: NHRA require sfi engine diapers in 2019 ? [Re: BradH] #2625878
02/25/19 02:09 PM
02/25/19 02:09 PM
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Originally Posted By BradH
Originally Posted By Bad340fish
It is a tough deal for us street car guys that need to keep things cool...

Who has a diaper on a small block A-body with TTI headers? One of the tubes is almost in the oil pan and the centerlink almost touches the milodon pan.

x2

In my case, it would be an RB E-body with TTI headers.

SFI or not (The MoPig ain't never gonna see a single-digit 1/4-mile ET), where should I be looking for a diaper for this type of application?

Also, how easy is it to remove one for basic service such as oil & filter change?

Re: NHRA require sfi engine diapers in 2019 ? [Re: merpar] #2625893
02/25/19 02:47 PM
02/25/19 02:47 PM
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I see a lot of good things said about DRE - enginediapers.com. No first hand experience though.


If the results don't match the theory, change the theory.
Re: NHRA require sfi engine diapers in 2019 ? [Re: merpar] #2625902
02/25/19 03:05 PM
02/25/19 03:05 PM
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Nevada
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merpar Offline OP
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Thanks for all the replies. Looks like it was a good topic to bring up. Thank you Al, just the info I needed. Hopefully will see you in Vegas at the Mopar, Muscle Cars at the Strip in April.To everyone else please use a diaper, it Could save you thousands. And hours at the track for everyone else.

Re: NHRA require sfi engine diapers in 2019 ? [Re: CMcAllister] #2625906
02/25/19 03:10 PM
02/25/19 03:10 PM
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PA.
pittsburghracer Offline
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I bought my first diaper for my Daytona back around 2006-2008. It’s still sitting unused on my shelf somewhere . It’s big, bulky, heat resistant, and free to anyone local when I find it. I will post up some pictures and like I said if someone local wants to drive here to pick it up they can have it. Sorry but I will not ship. I will try to post pictures today. This would be perfect for a tube chassis, rack n pinion big block car and was made for a Charlies or Dragster type of oil pan


1970 Duster
Edelbrock headed 408
6.143@110.85 mph
9.73@135.05 mph shifting at 6700 RPM
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time




Re: NHRA require sfi engine diapers in 2019 ? [Re: BradH] #2625911
02/25/19 03:16 PM
02/25/19 03:16 PM
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BradH Offline
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Originally Posted By BradH

In my case, it would be an RB E-body with TTI headers.

Not my car, but a representative enough pic to give people an idea of how a diaper would need to fit the application...

TTI headers_H-pipe.jpg
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