Single hella projector ordered for testing.
Delrin ordered for bushings.
Need to order all the fancy zerks from mcmaster
Need to try and return my 3" v-bands in exchange for 3.5". Going to try and shove something big up there.
Its official. Getting another junk VVT block to put in the corner of my garage
Exhaust hangars and spoiler material ordered. Onlinemetals is the ****.



5 u joints and straps for an F100...$33. Bitchin.

 

Ok so with exhaust everything I have read has been bigger is better. And the 3" vs 2.5" tests show that very obviously.

What about 3 to 3.5". I live near columbia mandrel bending and they have these first come first serve "B-stock" boxes. Slightly misformed bends. Its like $50 for a 25lb box of random bends. Plan was to pick one of these up and throw something together.

So price will be the same 3" to 3.5" but will I actually see a difference? I see different results wherever I go. And I don't trust 90% of the "tests" out there.

 

My understanding is that at the 300-ish rwhp level, you're well into the diminishing returns part of the curve by going from a 3" exhaust to 3.5". Since the 3.5" exhaust will be heavier and more of a PITA to fit, nobody bothers.

--Ian

 

What about 400...?

 

Do some back pressure measurements and find out.

In my case, I saw < 2 psi of back pressure behind turbine outlet when I had the test pipe installed, using an FM 3" exhaust with a non-ideal right angle in the muffler. That's at around 340 to the wheels (and would probably be 20hp higher if my motor wasn't excessively pingy and I could ALLOFIT on the timing at 24 psi).

--Ian

 

3-Inch Vs. 3.5-inch Exhaust Test - Tech - Modified Magazine

 

post fail

 

14k VVT motor.



Fits in a jeep.

Will be traded for a rod knocked motor.

 

I have read that. They are pushing a lot more air though.

 

What I got from it-

less than 300whp, no gains
between 300 and 500whp, minor to moderate gains which were negated by a lager, matching diameter DP
500whp, allofthegains

 

WTF AM I DOING WRONG WHERE HALF TO MOST OF MY POST IS DELETED!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !1Q4TH9ARBKL;JNAERV OJI


edit- **** you greater than, less than, and **** the forum updates

 

Exceeded DPL (Daily Post Limit)?

 

The forum has a rev limiter?

 

Only in my thread. We wouldn't want it to get out of control or something.

Ebay v-band guy sent me his phone number and said I can return the v-bands no problem. Probably going to wait for a box of 3.5" b-stock to pop up and jump on it.

Don't want to build an exhaust twice. Why not build allofit.

 

Ebay vband guy is pretty cool. Gave me his number too, which is normally a flag when they want to take off of ebay, but i got my stuff so...

 

I plan to still buy through ebay. Just easier to communicate.

 

Not to buy, for returns and replacements

 

Hope to still return and replace through ebay. We'll see.

 

Just so you know, that's an incredibly dick move.

Ebay doesn't care why you return stuff, all they care about was a return. It will put a mark on the seller's account, and if it gets too many he will go "below average" seller standard which costs a lot of money in fees.

You messed up, right, ordered 3" knowing it's what you wanted at the time?

Send it back without ebay knowing would be the right thing to do, sounds like the guy is doing you a favor and you're about to give him the finger.

 

Never heard of this. News to me.

I have mis-ordered many things and haven't had issues returning them.

Thanks for the heads up.