Re: how reliable is the hf manifold? how much power/psi?
 

why 2? and what is the rest of the setup you are going to use for the big hp D-series?

Re: how reliable is the hf manifold? how much power/psi?
 

are you serious? i'd be willing to say that i've seen in person atleast 10 HF/STD/CX manifolds that were cracked and in a 100% stock car

Re: how reliable is the hf manifold? how much power/psi?
 

so bigger runners meen more power ??? in some aspects.. on a smaller turbo (witch most likely will be going on a d-series.. ihi, t25...) wouldnt need huge runners. i would wrather have a better flowing manifold for that type of application. less bends=better flow... you be the judge ;)

Re: how reliable is the hf manifold? how much power/psi?
 

thanks for all the replies. i picked up 2 cause they were cheap....$10 each on ebay.....they didnt sell cause they never said hf or std or turbo manifold.....just d15 or d16 exhaust manifold. so they ended $10 each plus 25 shipping...for the money i set aside for 1, i got 2. for the 06, im just going for 250-275 whp. for 07 i might upgrade turbo,fuel pump, and ignition, and axles, get some slicks, and shoot for 3-350whp. bulding a d16z6 just eagle h rods, and still need advice on which pistons. depends on how much the stock sleeves can take. would i be better off filling the block, and get a block guard, just a block guard...or just leave it? im using a 14b for now, so i dont expect to get much higher than 250, for this year. and if anyone who is reading this has a 14b exhaust housing for sale, please let me know, i need one. thanks

Re: how reliable is the hf manifold? how much power/psi?
 

I have only seen them cracked on stock cars because of the cat below it. I have never seen them crack on turbo'd cars.
post of fill the block if you can.

Re: how reliable is the hf manifold? how much power/psi?
 

I've seen very few hf manifolds crack, the only one I did see crack I just rewelded it real quick. I would also choose a well ported HF mani over a log manifold. I'm running around 270ish whp in my daily driver using a HF manifold and t3/t4 turbo. However you want to keep AC? thats not gonna happen with the HF mani and decently sized turbo. If you wanna keep AC definatly go with the log.

Jeff

Re: how reliable is the hf manifold? how much power/psi?
 

this is a homemade turbo project....the ac was gone along time ago ;D

Re: how reliable is the hf manifold? how much power/psi?
 

ahh, I accidently read the guys post below yours and thought it was you

I'm hoping to make 250-300whp with it...and AC

I just dont see how it's possible unless you have some crazy ass adapter plate.. Maybe a top mount HF mani? haha.