35/40 Limitations
02-26-2004, 12:09 PM
#61
Member
Join Date: Feb 2004
Location: ellicott city/columbia, maryland
Posts: 83
i guess the dyno looks very comparable at the low end to
http://www.rx7club.com/showthread.php?threadid=179190
and
http://www.catenet.net/graph.php?car73=1&SUBMIT=GRAPH
i guess we just need a 40r dyno
http://www.rx7club.com/showthread.php?threadid=179190
and
http://www.catenet.net/graph.php?car73=1&SUBMIT=GRAPH
i guess we just need a 40r dyno
02-26-2004, 12:15 PM
#62
Member
Join Date: Nov 2002
Posts: 66
Yes it is a smaller version of my turbo. My turbo is a large frame turbo with a huge footprint but the turbo I am including in the kit is a standard t4 flange. I actually used this turbo in my car in the begining of the 2003 season that is how I stumbed on to it. When the dyno was started from o rpm it reaced full boost by 2900-3100rpm I know someone wants to raise the bs flag on this one but I do have witnesses 
And I'm sure you can see how fast it built boost from 3000 to 4000rpm. I have struggled wth sizing turbos for my car since 1997 but I think I am very pleased with the direction these years of testing have taken me.
Demetrios Karagiannis
Demetrios Karagiannis
02-26-2004, 12:26 PM
#63
Member
Join Date: Nov 2002
Posts: 66
Blue,
There are many differences from those dyno sheets compared to the R85 turbo. One the torque curve on the R85 is straight as a arrow and not peaky like the ones you linked to. the main reason for this is the turbine wheel on a gt3540 is way to small even for a street aplication. This causes te pressure ratio witch is xhaust/intake o be toatlly screwed up and ruin the efficency of the motor at high RPMs. Also overall horsepower for the R85 is higher at low boost levels plus hs the potential to add race gas a little tuning and make 620 with no problem. The point being the R85 is th better turbo at low and high boost and doesn't sacrifice the 3100 spool up to accomplish these numbers.
Demetrios Karagiannis
There are many differences from those dyno sheets compared to the R85 turbo. One the torque curve on the R85 is straight as a arrow and not peaky like the ones you linked to. the main reason for this is the turbine wheel on a gt3540 is way to small even for a street aplication. This causes te pressure ratio witch is xhaust/intake o be toatlly screwed up and ruin the efficency of the motor at high RPMs. Also overall horsepower for the R85 is higher at low boost levels plus hs the potential to add race gas a little tuning and make 620 with no problem. The point being the R85 is th better turbo at low and high boost and doesn't sacrifice the 3100 spool up to accomplish these numbers.
Demetrios Karagiannis
02-26-2004, 03:35 PM
#64
Senior Member
Thread Starter
Join Date: Jun 2002
Location: La Plata, Maryland
Posts: 9,725
Dee, that sounds like exactly what I want.
No prices are listed. If you could hook me up with an estimate for the kit and the tunning with a PFC.
I can do all the mechanic work. I will be most likely buying a Power FC unless you think I would be better off with a haltec since I would need you to tune it anyway. If you think haltec is the way to go, What info do i need when looking for one?
Thanks man.
Dave
No prices are listed. If you could hook me up with an estimate for the kit and the tunning with a PFC.
I can do all the mechanic work. I will be most likely buying a Power FC unless you think I would be better off with a haltec since I would need you to tune it anyway. If you think haltec is the way to go, What info do i need when looking for one?
Thanks man.
Dave
02-26-2004, 04:00 PM
#66
Member
Join Date: Oct 2002
Posts: 78
Originally Posted by rotor_dee' date='Feb 26 2004, 09:18 AM
I have run into similar problems in the past that are troubling you guys contimplating different single turbo conversion. My desire to not use nitrous on my car for spool up purposes left me to try to find a turbo that could make good power down low and top end as well. With my 769rwhp turbo I can sacrifice a little more down low then the average guy. But while I was testing many turbo's I came across a turbo that I now reccomend for street/strip usage. It makes over 460rwhp at 14psi with a spoolup that is incredible but still has enough wind to make 620rwhp at 25psi wich is more power then most people are making with there so called race turbos. If you take a look at the dyno chart you will see that during a 4th gear pull we started at 3000rpm and made full boost by 4200rpm wich is incredible. This is not the turbo for people that want to make over 650 as it does run out of wind around that mark. I have been nusing these turbos for over two years with no failures and they have withstood the abuse I put them through. Any one who is interested feel free to check out the dyno sheets for the street/strip kit http://www.kgparts.com/R85.htm or the race kit at http://www.reactiveracing.com I have teamed up with kieth and he will be marketing the kit for me. I am not forcing anyone to buy the kit. I would be more then glad to discuss what made me choose this turbo for any one that wants to chat give me a call the number is in the contact section of my web site.
Demetrios Karagiannis
Demetrios Karagiannis
02-26-2004, 05:02 PM
#67
Senior Member
Join Date: Jul 2001
Location: oHIo
Posts: 273
Originally Posted by rotor_dee' date='Feb 27 2004, 12:15 AM
Yes it is a smaller version of my turbo. My turbo is a large frame turbo with a huge footprint but the turbo I am including in the kit is a standard t4 flange. I actually used this turbo in my car in the begining of the 2003 season that is how I stumbed on to it. When the dyno was started from o rpm it reaced full boost by 2900-3100rpm I know someone wants to raise the bs flag on this one but I do have witnesses And I'm sure you can see how fast it built boost from 3000 to 4000rpm. I have struggled wth sizing turbos for my car since 1997 but I think I am very pleased with the direction these years of testing have taken me.
Demetrios Karagiannis
Demetrios Karagiannis
Hey Demetrios, do you have a compressor map you could send me?
Tony
02-26-2004, 06:01 PM
#68
Member
Join Date: Nov 2002
Posts: 66
We are trying are best to keep the kit's price right around the $3000 mark and so far so good it looks like we will be succesful. For those of you that have the t-78 kit already, Kevin if you would like to volunteer the use of your car I will see if the turbo will fit on the existing manifold but no promises Bad Dog email me and I can forward you a copy of the compressor maps but I assure you nothing special in that department most of the bebnefit of this turbo is the turbine housing and wheel. Unfortunately I do not have a turbine map.
Demetrios Karagiannis
Demetrios Karagiannis
02-26-2004, 06:23 PM
#69
Senior Member
Join Date: Jan 2003
Location: union, new jersey
Posts: 8,079
i e mailed keith about the R85 earlier..... but hasnt responded to me yet
but i think i got all the info i needed ........
seems like there are a lot of interest, when is the production date gunna take place
but i think i got all the info i needed ........
seems like there are a lot of interest, when is the production date gunna take place
02-26-2004, 06:29 PM
#70
Senior Member
Join Date: Oct 2001
Location: Clifton, NJ
Posts: 1,675
Originally Posted by Zero R' date='Feb 26 2004, 05:44 AM
So are you saying, that 430@16lbs or 470@20psi were bad numbers? You say you think the timing was off and porting was crap, good numbers still against those odds, so then you couldn't dyno it again because the turbo was bad/damaged, you can't follow that with a complete rebuild and new tune and then say this new turbo is better because of it? Don't get me wrong here, I'm not attacking you or flaming you, just saying it's not a good comparison.
Don't get me wrong, the 35/40 is plenty for the majority people. I think it is a much better choice than saw an rx-6 or 20g. But I get bored quickly and there are ALOT of fast domestics here in TX. I don't like to lose or even for it to be close...