tom86iroc: I have that bracket already. The small Alt one. I know it is helping a little.

gta324: Ok so I will start the search for what 12 rib tensioner I can get my hands on. Then post back. I will also see how much those ASSC braces cost.

I think I am on the right track to get the 12 rib 3.40" to not slip and be able to pull 13-15 psi.

I would really like to buy everything then do one teardown, mod the bracket, one build up and head back to the dyno for a final re-tune.

Thanks for all your help, I will post what I find on ebay.

 

OK, so I called sd concepts and they sound very competent. They make a spring loaded tensioner for ANYTHING. Regardless of what it is. Turns out they are near me in RI. I live in MA. They take the bracket add whatever they need to make the setup not slip. The only thing I would need to buy is the tensioner and their services. They will machine the old bracket and take care of all that. They think it will cost around $500. I think it is worth it.

What do you guys think?

I will be sending them pics of my motor today so they can give me a rough estimate. I am broke right now, (getting married in a year) but I think I can scrape up $500 if it means I can make the power I want this season.

 

Like I wrote there are some cummings diesel that have a 12rib setup with a spring loaded tensioner.....In that case you should only have to drill a hole

 

I ended up getting rid of the serpentine set up all together. I tried both a Vortech and Procharger. Both had bracket flex and belt slip issues. I now run a F-1a on a standard SBC bracket with a normal rotation water pump and separate alternator. 15lb of boost and no belt slip or bracket issue.
I think the serpentine setups just hang it too far out without much support. Below is a pic when I was doing mock up.

 

So that's the Procharger SBC bracket?

And it fits in our cars?

 

that bracket is doubled up that's why it doesn't flex lol they must use that other piece in the back to spacer it out correctly

 

dennis that;s for the carb'd cars the bracket you have is for serpentine cars

 

I am running a C&S, blow thru Carb setup. The only reason I bought this setup was to run a serpentine belt on my accessories. I hated v-belt run items I had before.

 

That bracket will work for carb, TBI, TPI and Stealth Ram. It just gets rid of the serpentine set up and places everything closer to the motor. More strength and isn't as hard on the crank snout.

And yes it fits (just barely) in a 3rd gen. You can clock it pointing down to run to an intercooler, or towards the throttle body or carb. I run it up, connected to a Stealth ram.

 

That's the set I have except I also have the bracket that mounts on the head to lower te supercharger down so it clears the hood.

 

please post pics!

 

OK, so I just got off the phone with ASSC. Very nice guy. Clearly has a crap load of experience. The brackets can be had for $450 total. $180 for the upper and $100 for the lower. The remainder is the custom machining that is needed to be done to the bracket to accept the brackets. They are NOT simple bolt ons. The lower idler needs to be removed as well. He also told me that you SHOULD NEVER run a cog with a standard crank keyway. I wish I had planned ahead better. He says you need to run a hardened balancer with a double big block keyway cranks and a special support timing cover to make sure the cogs don't destroy the crank. He also said he tightened the 12 rib super tight using a 3 foot breaker bar and drove the car for 30K miles with no issues appart from the blower bearings wearing out a bit.

I think I will be sending him my bracket and $450 to get the work done.

On a side note the side attachment is on a threaded rod that allows you to flex the bracket forward and back by adjusting some nuts so that you can "dial in" who the brackets wants to be bent for the most stability. Very important for the cog guys.

When I do go to cog, this bracket will be coming with me and will be ready for the new crank. At least the first step will be taken care of.

Any thoughts?

 

Yeah, get that thing together so we can hear how mean it is...

 

here's my setup i removed the lower pully and drilled a new spot for the cog pullies i just need to find someone that will make me a smaller custom pulley i dont like how they are that close together and i'm making up the 2 anti flex bracket i've made the lower 1 just making the 1 for the side from the header to the lower section of the blower then i'm done just decided on bigger heads some i'm in the process of swapping those out now i already have a fluid damper on there and i drilled the bolt holes to 1/2 inch to hold this all together with the cog hanging that far off the snout and i also have 3 keyways the factory and i pinned the crank 2 more time so that should hold it from shearing anything off

 

Damn, you are in mucher better shape than me. I will def do all the things you did for the next build, but for now I just need to get this damn 12 rib to not spin. Good luck with yours, looks like you are on the right track. I think I will take ASSC on his offer for $450 and get my main bracket to not flex. Then mess with pulley size to get belt wrap and tension.

Not much else I can do.

Seems like it won't cost that much either.

(getting married next year, and trying to buy a house)


(with a big garage)

 

Dennis thanks and i'd go the ASSC route too seems like a good deal let us know how it works out and good luck with the build and getting married

 

I was getting flex and throwing belts. I made a brace that goes to the battery tray, then another that goes to the STB. Haven't thrown one since!

 

Pics?

 

I've been slack. I'll get some uploaded soon!

 

Pics of your brackets please!

 

Dont know if you follow my thread, new bracket tested and it works really good!
15psi at 5000rpm so far

 

I do follow your thread, that's awesome. Just wish I could make something like that

 

Any luck with your project?

http://www.sd-concepts.com/documents...gTensioner.pdf

 

What spark plugs do you guys think I should run? I have a Digital 6 plus box, BTM box, Blue MSD blaster coil and pro billet dizzy with MSD 8.5mm wires?

Also what if anything could I do to make this ignition better or is this sorta the top for a street car?

 

Spark plugs depend on what type of heads your running, I have a set of DART PRO1 aluminum heads, I use NGK R5671A-8, keep in mind the last number (which repersents the heat range of the plug, not all plug manufactures repersent there heat range the same, for example NGK plugs, the higher the number, the colder the plug). I would talk to Larry @ ASSC or C&S as far as what type of plug they think to should run based off of your motor combo.

Also, not to steal your thread, but I'm currently in the process of changing my pulley that came with my procharger (4.25) to (3.70). Which with the 4.25 pulley I made 10lbs of boost @ 6600, the new should hopefully get me up to 14-16lbs, hopefully the braces that I got from Larry @ ASSC work like they should.

 

I have used Autolites 3923 now for years........

I see some pressure drop due to my IC, will logg some more to verify it, and then change IC just to compare.......
Right now I dont know if I ever will put on the 3.4" pulley....

 

Ok, so I guess I will pick up some new plugs, maybe those 3923s and see if I can get my motor to fire and not backfire. Fingers crossed.