NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   Single Turbo Discussion (https://www.nopistons.com/single-turbo-discussion-13/)
-   -   68-1 Bb (https://www.nopistons.com/single-turbo-discussion-13/68-1-bb-14622/)

zooq 03-29-2003 01:16 PM

has anyone ran the 68-1 BB on their FD.

i'm looking at one with a .84 A/R.

how bad is lag with that turbo? and how much hp will it make with a race port and 15 psi , 20 psi?

thanks

93 R1 03-29-2003 09:29 PM

Never heard of anyone using one.



.84 on the hot side sounds small but probably about right for the front side. My guess is probably around 500 at 20psi https://www.nopistons.com/forums/pub...1047683473.gif



Just guessing though

Dragon 04-01-2003 09:58 AM

You'll have massive turbo lag.. My T70 actually has about the max lag I want to put up with.. and at 15-20psi you'll make maybe the same power as a To4s because a T78 doesn't start to even come online till about 18 psi or so.. The .84 ex housing would be pretty small unless it's a Q-trim ex wheel/shaft then it would be about right.. If your going to use a P-Trim ex wheel you'll want a a/r 1.0 or 1.15

93 R1 04-01-2003 07:02 PM

Dragon...explain your "max lag" and look at the top of the single forum's pinned threads https://www.nopistons.com/forums/pub...DIR#>/wink.png we need your input

Dragon 04-03-2003 01:29 PM

I lost some of the peppyness on the bottom end compared to my to4r that I was running... It's still fine, but I lost a little bit of that 3,000-4,000 rpm in the wrong gear and need to get around these ass holes driving slow as **** in front of me power.. https://www.nopistons.com/forums/pub...#>/biggrin.png



I'll check out the threads.. I've been buisy as hell working on cars at the shop recently.. https://www.nopistons.com/forums/pub...>/rolleyes.gif

93 R1 04-03-2003 05:44 PM

So useable boost doesn't really start to kick in until about 4000rpm? I bet it ******* pulls like a rocket from 5-9000 though https://www.nopistons.com/forums/pub...DIR#>/wink.png

rx7machine 04-03-2003 06:11 PM

Yea, once that turbo finally kicks in.. it's probably one hell of a kick.

93 R1- I love your avatar. https://www.nopistons.com/forums/pub...IR#>/boink.gif

Dragon 04-04-2003 07:23 AM


Originally Posted by 93 R1' date='Apr 3 2003, 03:44 PM
So useable boost doesn't really start to kick in until about 4000rpm? I bet it ******* pulls like a rocket from 5-9000 though https://www.nopistons.com/forums/pub...DIR#>/wink.png

She starts to get a little crazy, but the fun won't start until I turn the wick up to 1.5 kgcm.. Then the partys going to start or stop real quick.. lol


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