Blower Restraints

[arush]

I will be running a blower on alcohol.
Can I run 14.1 restraints or do they have to be a 14.2 ?  (big difference in prices)

Is there an ET where a 14.2 becomes mandatory ?

I normally do not run any national events but would like to make some passes at the HHRR this year at Bowling Green.




The local tracks around this area will not nothave a problem

[dreracecar]

Absolutely run the 14-1 legal to 6.00 seconds when alc is used for fuel
14-2 is the addition of a bag
14-3 is a bag and bottom plate to be used when nitro is used for Fuel

[arush]

Thats great news.
Appreciate the clarification Bruce.

[Paul New]

14.3 also required for AA/AM not something most of us would run but some do run more than just the nostalgia classes

[buickfed]

me and my oddball buick run an old b&m 162 with a 6 rib belt. belt protection not required. building another intake for 4-71 and will be running a 16 rib belt. do you think I need belt protection and restraints for this?
aren't you glad you don't run stuff like this. 

[dreracecar]

If the fuel lines run inside the belts, then a belt guard is not needed, if alc is used as a fuel the a blower restraint 14-1 is needed.  DJ Safety is good with working with odd ball combos, I am making a new top plate for a customers setup and they will strap it for me.

[arush]

Can you mount the hardware to one header bolt or does it need to be attached by two header bolts?

[dreracecar]

just 1

[buickfed]

I still/will run a mechanical pump and the f/l runs up behind the dist to the carb. I think it's buried enough to be away from any belt issues. don't think the 16 rib will give me any problems. probably jinxed myself by saying that.

[arush]

I just received my DJ Safety 14.1 blower restraints.
I gave them my dimensions and they said that I should have the 18" long straps.
After putting them on they seem about 2" too long.
The 18" looks way to floppy to me and the next size smaller is a 15" which is about an inch too short.
I could have them make a custom 16" set or get their adjustable straps.
My question is, Are the adjustable straps still NHRA legal ?

[Paul New]

I just received my DJ Safety 14.1 blower restraints.
I gave them my dimensions and they said that I should have the 18" long straps.
After putting them on they seem about 2" too long.
The 18" looks way to floppy to me and the next size smaller is a 15" which is about an inch too short.
I could have them make a custom 16" set or get their adjustable straps.
My question is, Are the adjustable straps still NHRA legal ?

I run the adjustable straps

[dreracecar]

You don't want them too tight, you want the blower to separate from the manifold. If there's room, you can cut and redrilled the bottom brackets

[arush]

Appreciate your feed back Paul.

Bruce, I've got the brackets as low as I can get them. I agree that you want the blower to separate from the manifold if things go south but as of right now it could lift about 3".
Do you feel that is excessive ? Whats your opinion of the adjustable ones and do you know if they are NHRA legal?

[dreracecar]

2/3 inch's is standard, as long as the straps are date code tagged they are legal

[arush]

Thanks Bruce.     Happy New Year....