Trans blanket

[bobtile]

Does anyone know if an sfi 4.1 trans blanket is ok for a mid 10 second car. Would you guys use one or should I bite the bullet and go with a complete shield?

 

[SUPERSTOCKRACER]

Does anyone know if an sfi 4.1 trans blanket is ok for a mid 10 second car. Would you guys use one or should I bite the bullet and go with a complete shield?

I have 2 blankets here if you choose to go this route.
Who's car is mid 10 seconds?

 

[bobtile]

I have 2 blankets here if you choose to go this route.
Who's car is mid 10 seconds?

This guy I know is stripping down his car. It will weigh 3000 lbs in the spring!

 

[splicer]

Either SFI 4.1 rigid shield or blanket is required under 11.00 seconds...Blankets are good for 2 years from date of manufacture and rigid shields are good for 5 years.......
And although not required till 9.99 and quicker, I'd recommend an SFI 29.1 flexplate...they're not expensive and are cheap insurance...

John B.

 

[Endangered Species]

Bobtile,

If you're going to race then this off season pull the trans and have a billet aluminum or billet steel drum installed. You can put a blanket on but if you're running the stock drum it WILL blow though the blanket or shield and through the floor boards and if your lucky you'll just bruise your foot.... if not shatter it.

I saw an 11.00 63 max wedge Dodge blow through the blanket - through the floor board and actually through the dash braces.

 

[mopar 3 B]

So what are you doing with your blankets after 2 years? I can only go racing when it car is OK and can afford it. Price of a new blanket is out of the question but would really like the added protection and has got to be better than nothing. Do not run in a class that requires one when I go.

 

[bobtile]

Bobtile,

If you're going to race then this off season pull the trans and have a billet aluminum or billet steel drum installed. You can put a blanket on but if you're running the stock drum it WILL blow though the blanket or shield and through the floor boards and if your lucky you'll just bruise your foot.... if not shatter it.

I saw an 11.00 63 max wedge Dodge blow through the blanket - through the floor board and actually through the dash braces.

I put a billet steel drum in last time the trans was out. Thanks
I

 

[MoparMitch]

My Dog has a warm Blanket !!

 

[bobtile]

My Dog has a warm Blanket !!

Does it protect you when he explodes?

 

[MoparMitch]

Does it protect you when he explodes?

Only if he's eaten Mexican from my plate the night before!!

 

[SUPERSTOCKRACER]

Only if he's eaten Mexican from my plate the night before!!

So you're from a Spanish descent?

 

[MoparMitch]

So you're from a Spanish descent?

Yeah, I'm your Daddy.

 

[383man]

I bought a used blanket from a member on one of the Mopar sites. Dont remember who it was but its on my 63 which is a street car that I have only been racing once a year the last few years. The last two times I have raced I ran in a Nostalgic Superstock class. To be honest I cant remeber the last time any of the tech guys at the tracks I raced at have even looked my car over. Last year at MIR they did not look at anything and they have never even checked to see if I have a trans blanket on the car which of course I do. They have not checked to make sure I have an SFI balancer either which I also do have one. In fact I was surprised last year as my belts were 2 years old but the track tech inspecter just put NSS and a car number on my car and just looked at the car from about 5 feet away and that was it. The last 4 times I have raced they never even asked me to open the hood. I would like to just go with the trans shield instead when I can do it. But its good to have atleast the blanket if you plan to run faster then 11.00 and as was said its a rule to have one anyway under 11.00. Ron

 

[bobtile]

I'm not looking just to sneak by tech. I want to put on what is A: safe and B: within the rules. When I started racing last year, all I needed was a helmet and seatbelt.I never imagined I would get the car to the point where I needed so much more safety equipment. By the time that the car started approaching the point of needing a cage, The techs at the tracks I race at already knew the car, so they weren't looking as closely as they should have. The most they made me do was put long studs on the front wheels. I built the car with an sfi flexplate and balancer. I got the car down into the 11.30's with no bar. This year, I don't want to take a chance with safety or missing a race due to tech. I want to make the car good to 10.50. I don't think I'll be there for a couple years, but you never know. I didn't think I would ever be in the low 11's as built.

 

[Longroof]

I like the CSR carbon fiber shields, i ran one on my last car. They are molded to the contour of the trans and usually fit close enough so you don't have to cut up the floor. I know several guys who have run them without cutting up the floor. I don't like blankets... they are just a mess, they hold any oil that comes out of the trans, they make the trans run hotter, and the straps are a pain in the ***.... but than again sometimes I am not the most patient person, others have had luck with them but I just don't care for the blankets.

If i ever get another area that needs a trans shield I will run a CSR shield again.

 

[383man]

I'm not looking just to sneak by tech. I want to put on what is A: safe and B: within the rules. When I started racing last year, all I needed was a helmet and seatbelt.I never imagined I would get the car to the point where I needed so much more safety equipment. By the time that the car started approaching the point of needing a cage, The techs at the tracks I race at already knew the car, so they weren't looking as closely as they should have. The most they made me do was put long studs on the front wheels. I built the car with an sfi flexplate and balancer. I got the car down into the 11.30's with no bar. This year, I don't want to take a chance with safety or missing a race due to tech. I want to make the car good to 10.50. I don't think I'll be there for a couple years, but you never know. I didn't think I would ever be in the low 11's as built.

Dont get me wrong as I did not mean to imply to try and get by on as litle as needed. With my seat belts I meant they are only good for 2 years and I just forgot they were 2 years old last year but they never even looked at them. I was thinking they would ask me to lift the hood and all but they just have not. By all means you want to be safe and legal anyway so you can race. I actually raced a few times running 10's before I realized I need atleast a trans blanket to be leagal but none of the tracks looked under my car or even told me I needed a blanket in the 10's. But I wanted atleast a blanket once I ran in the 10's and will put a trans shield on as soon as I can as they are definetly better then the blanket. Ron

 

[bobtile]

I'LL PROBABLY PICK UP A trans shield. I guess that would require cutting that pinchweld area in the trans tunnel ? That wouldn't keep me from doing it, just thinking.

- - - Updated - - -

I like the CSR carbon fiber shields, i ran one on my last car. They are molded to the contour of the trans and usually fit close enough so you don't have to cut up the floor. I know several guys who have run them without cutting up the floor. I don't like blankets... they are just a mess, they hold any oil that comes out of the trans, they make the trans run hotter, and the straps are a pain in the ***.... but than again sometimes I am not the most patient person, others have had luck with them but I just don't care for the blankets.

If i ever get another area that needs a trans shield I will run a CSR shield again.

That's the one I was looking at.

 

[Shorthorse]

Bobtile,

If you're going to race then this off season pull the trans and have a billet aluminum or billet steel drum installed. You can put a blanket on but if you're running the stock drum it WILL blow though the blanket or shield and through the floor boards and if your lucky you'll just bruise your foot.... if not shatter it.

I saw an 11.00 63 max wedge Dodge blow through the blanket - through the floor board and actually through the dash braces.

I completely agree with KD Belvedere.

This is from John Cope Racing Transmissions (CRT):
"Billet drums do two things; first and foremost for the 727/904 high gear drum is the elimination of the violent explosion that occurs when the overrunning clutch (we call it the sprag) fails. When the sprag doesn’t hold, it spins the high gear drum at the engine RPM times the reverse gear ratio (stock is 2.20:1). An example would be if someone let out of the throttle at 5,000 RPM. The speed of the high gear drum is 5,000 X 2.20:1 = 11,000 RPM. The stock drums usually come apart about 9,000 RPM on a free rev. The stock steel drums are a powder metal forging. The factory uses this because it is a cheaper, high-production process."

 

[rapid transit]

get the shield the blankets get wet and messy hope fully your floor has room

 

[440beep]

Confirming the below post, here's the excerpt from SFI Specification 4.1 (effective 3/27/2013) dealing with Automatic Transmission and inspection periods.

Section 2.3 The flexible blanket type of Automatic Transmission Shield shall be inspected for modification and deterioration every two years. If it is acceptable, it may be recertified by the manufacturer. If the blanket is not acceptable, it must be replaced. When a unit is determined to be acceptable for continued service, a new conformance label marked with the inspection date shall be used.

Section 2.4 The rigid type of Automatic Transmission Shield shall be inspected for damage or modification every five years. If it is acceptable, it may be recertified by the manufacturer. If the shield is not acceptable, it must be replaced. When a unit is determined to be acceptable for continued service, a new conformance label marked with the inspection date shall be used.

Either SFI 4.1 rigid shield or blanket is required under 11.00 seconds...Blankets are good for 2 years from date of manufacture and rigid shields are good for 5 years.......
And although not required till 9.99 and quicker, I'd recommend an SFI 29.1 flexplate...they're not expensive and are cheap insurance...

John B.