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RX7Club.com - Mazda RX7 Forum (https://www.rx7club.com/)
-   Single Turbo RX-7's (https://www.rx7club.com/single-turbo-rx-7s-23/)
-   -   My PFSupercars build (https://www.rx7club.com/single-turbo-rx-7s-23/my-pfsupercars-build-732949/)

ErnieT 04-01-08 08:53 PM
Originally Posted by rotorsownu (Post 8046022)
Thanks, I changed my mind with the 42R, I'm going with a borg warner turbo thats a bit bigger than the 42R
You won't crack 700whp without a 2 piece e-shaft or not for long. You'll also need more fuel injectors as well.

mono4lamar 04-01-08 09:03 PM
Which Borg Warner are you going with??? I wonder how long my motor's going to last without the 2 piece e-shaft... My 42r will be going in soon. I guess I'll keep it down to 650whp :naughty:

ZAN_TUNING 04-02-08 01:41 AM
Originally Posted by mono4lamar (Post 8046152)
I wonder how long my motor's going to last without the 2 piece e-shaft...
it can last a lot longer than most think ;) that e-shaft is one of the ways to tackle the problem, not THE ONLY way.

AnthonyNYC 04-02-08 01:52 AM
Originally Posted by Intense_Motorsports (Post 8047154)
it can last a lot longer than most think ;) that e-shaft is one of the ways to tackle the problem, not THE ONLY way.
What's the most HP you have made on the stock shaft without the rotor tips touching?

Aside from clearancing the rotors, anything else I'm missing?

Thanks,

Anthony

ErnieT 04-02-08 06:41 AM
Originally Posted by Intense_Motorsports (Post 8047154)
it can last a lot longer than most think ;) that e-shaft is one of the ways to tackle the problem, not THE ONLY way.
When your making that kind of power, yes other things are needed to be done, but the e-shaft is necessary to help with engine flex. Only speaking from experience though.;)

rotorsownu 04-02-08 02:59 PM
Originally Posted by ErnieT (Post 8046100)
You won't crack 700whp without a 2 piece e-shaft or not for long. You'll also need more fuel injectors as well.
My rotors are getting clearanced more and all the other stuff along with it. I don't have time to wait on the eshaft, it's on backorder. I'll have 6 injectors.

rotorsownu 04-02-08 03:01 PM
Originally Posted by mono4lamar (Post 8046152)
Which Borg Warner are you going with??? I wonder how long my motor's going to last without the 2 piece e-shaft... My 42r will be going in soon. I guess I'll keep it down to 650whp :naughty:
the 78mm inducer I believe, (may be wrong) I was gonna go with the 42R but it's not as reliable as the borg warner, plus it makes a nice high pitch whissel and it's slightly bigger.

ZAN_TUNING 04-02-08 05:04 PM
Originally Posted by ErnieT (Post 8047445)
When your making that kind of power, yes other things are needed to be done, but the e-shaft is necessary to help with engine flex. Only speaking from experience though.;)

sorry i didn't mean to sound like i was going against what you were saying, just that i believe for the 700ish point it's not neccessary, altho it's a great help.. i guess we shall see in due time :D

mono4lamar 04-02-08 08:25 PM
I'm not sure if a Borg Warner could be more reliable than a 42r simply as all the Borg Warners are oil lubricated/cooled. The 42r is oil lubricated and water cooled. Water cooled turbos typically last longer than a oil dependent turbo. I'm probably wrong though...

Big Ern, can you elaborate on what Ray does for his "race clearancing?" I'm not asking for specs but just the basics...

ZAN_TUNING 04-03-08 12:29 AM
we are starting to switch everything over to borg warner on all our hondas.. and if you go to the track you will see a lot of them making the change as well ;)

we use a lot of GT35r and GT40r turbos and i'll be honest i'm very un happy with the reliability of them. granted we're pushing them all in the 30psi range quite frequently but we have some that with less than 1000 miles are blowing oil out the compressor side. we keep adding crank case ventilation and it helps a tiny bit but we do not get this issue with the good ol' Borgs :D

ErnieT 04-03-08 06:24 AM
Originally Posted by Intense_Motorsports (Post 8051409)
we are starting to switch everything over to borg warner on all our hondas.. and if you go to the track you will see a lot of them making the change as well ;)

we use a lot of GT35r and GT40r turbos and i'll be honest i'm very un happy with the reliability of them. granted we're pushing them all in the 30psi range quite frequently but we have some that with less than 1000 miles are blowing oil out the compressor side. we keep adding crank case ventilation and it helps a tiny bit but we do not get this issue with the good ol' Borgs :D
Are you using a restricter on your oil feed? Sometimes too much oil is as bad as not enough.

rotorsownu 04-03-08 02:32 PM
I shouldn't have a problem hitting a little over 700, thats my goal. Plus it's not like i'm gonna run 35psi daily or anything, only when someone wants an ass whooping =D

ZAN_TUNING 04-04-08 01:11 AM
Originally Posted by ErnieT (Post 8051814)
Are you using a restricter on your oil feed? Sometimes too much oil is as bad as not enough.
yes sir always do... it's not every single one doing it, but it's happening quite often, but again mostly in the high boost setups. we're actually about to finish a gt4202 setup on one of our coupe's so we'll see what's up.

i just gotta say the BW's are really impressive and it's what i'm using on my new setup now.

rotorsownu 04-08-08 11:18 AM
2 Attachment(s)
Heres the Borg Warner turbo I went with ;-)

AnthonyNYC 04-14-08 07:20 AM
Originally Posted by rotorsownu (Post 8069954)
Heres the Borg Warner turbo I went with ;-)
What are the specs on that one? 74mm?

rotorsownu 04-14-08 02:21 PM
Originally Posted by AnthonyNYC (Post 8091044)
What are the specs on that one? 74mm?
Either 78mm or 80mm. I forgot it's either or. Ray has the turbo, he sent me those pics.

mono4lamar 04-14-08 03:22 PM
Originally Posted by rotorsownu (Post 8069954)
Heres the Borg Warner turbo I went with ;-)
On the compressor outlet what's the v-band flange? Is it s 3" v-band???

rotorsownu 04-14-08 03:47 PM
Originally Posted by mono4lamar (Post 8092500)
On the compressor outlet what's the v-band flange? Is it s 3" v-band???
I think it's a 4" vband, i'm running 4" everything

mono4lamar 04-14-08 05:58 PM
^ I think you're thinking of the turbine housing. I don't think you would have a fun time routing 4" inter-cooler piping...

rotorsownu 04-14-08 10:47 PM
Originally Posted by mono4lamar (Post 8093146)
^ I think you're thinking of the turbine housing. I don't think you would have a fun time routing 4" inter-cooler piping...
haha my bad yeah i was, it's a 3band

rotorsownu 04-22-08 12:00 PM
should have car back this week...i'll keep everyone updated

rotorsownu 05-24-08 03:14 PM
5 Attachment(s)
Went to check car out yesterday at pfs. looks very nice. heres the progress

mono4lamar 05-25-08 10:55 AM
Looking good. Can't wait to see the new numbers...

rotorsownu 06-24-08 06:58 AM
5 Attachment(s)
updated pics...car should be done this week...all we got left is 4" exhaust

KNONFS 06-24-08 07:09 AM
^^^ Looking GOOD! :icon_tup:


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