Still working on the new motor. I'm almost done with the porting. Just have to finish the exhaust ports. The intake ports are enormous, even bigger than Vosko's. I started porting the intake manifold last night. Mainly I'm waiting on my guy to finish the turbo manifold.

someone give us a dyno of 40r!



demetrios had told me to take a ride in a t78 before making my decision, he also said t04s was nice. but i think im more impressed by the 3540.



where in ellicott city are you? im off centennial lane. maybe i've seen your car before.

hey blue, did dee tune your car after he put in the clutch? i saw it at his house. nice color. mine was the one in the garage. i went to centennial too. i moved now. off of route 40 by the other safeway.

Did you pop an apex seal at some point? It sounds like you poped a seal and it took out the turbos turbine wheel on the way out the exhaust



STEPHEN

Three times with the 35/40. Each time the turbo got trashed. After buying a rebuild cartridge the first time, I later learned that the exhaust wheel itself could be fixed. First time was a bad spot in my ignition map that had a -2 degree split. The second time was a bad tank of gas and while racing a moded viper. Third time I don't know... Funny thing is the car ran great for a few k miles on all three motors, then just suddenly let go. I found some interesting stuff each time I took it apart. Stuff like poorly wired fuel injector connectors and no resistors for the 2ndaries. I also found a broken injector wire the last time it went, but I think it was my fault because of the resistors I used that had solid wire. One more thing I learned from Judge Ito is the way you have to bevel the exhaust ports. I didn't know and didn't do this, so maybe thats why the last couple motors let go. Hopefully I'll get everything right this time.

was your car the yellow one?

he didnt do any tuning. it was tuned by pettit when i bought it. once i have enough money to get a single i will then get a pfc probably and have him tune it. i have to drop off the car sometime this week or next to get new injectors, i think they are leaking. would be nice if you give me a ride home so i can feel a t78. do you live near normandy or long gate.

any graphs to compare the gt35/40 to to4e or s?

I hit 10psi when I do that. https://www.nopistons.com/forums/pub...#>/biggrin.png

What about the t4 35r "blowzilla" that cheap turbo.com sells?

Anyone ever bought one of those?

Suhweet! I gotta port this biotch while it's down! https://www.nopistons.com/forums/pub...#>/biggrin.png

This is wrong, it isn't even in it's window till 17lbs.



-Sean

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.

They are eff. up to 29lbs.



-Sean

When you say efficient what percentage is that? 60 65?

No ******* way

if it doesnt become efficient UNTIL 17psi then it sounds like the one for me. i'll just have to use 98 octane. id still like to see some 40r numbers first and then decide between that and the 35r.



still not answered... what kind of boost would it be safe to go up to with 93 and with 98?

I think you'd be safe to go to 16 maybe 17 pounds on 93 and then 98 octane would be safe I'd think for another pound or two, but you're probably best off asking Sean as he's more familiar with the kits and what people run with them.

-Nic

I ran 18psi on 93 for a few years and 35k miles on the motor.

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

Is this kit a smaller version of that larger turbo that you made 750+ on?

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

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 https://www.nopistons.com/forums/pub...IR#>/smile.png 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

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

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 https://www.nopistons.com/forums/pub...1047683473.gif

^

same question

dee was it this secret turbo you were talking about. i want one https://www.nopistons.com/forums/pub...#>/biggrin.png how much.....i can probably sell my t-78. do i need a new manifold or do i just swap it out.. i will try to call you. i m getting used to the power of my greddy. hook a brother up man. i will make you and your wife or your dog if you want bleaching kit. i need the secret turbo. oh yeah, this is kevin myint by the way. i will be calling you or i might wait till i let you port my motor. thanks kvn

Hello to another respected long timer: Demetrios Karagiannis



Hey Demetrios, do you have a compressor map you could send me?



Tony

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 https://www.nopistons.com/forums/pub...IR#>/smile.png 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

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

It wasn't reliable horsepower. The timing was close to 18 degrees advance and I remember the a/f ratios getting into the mid 11's. At the time my knowledge about tuning was very limited, so I thought it was ok. I was concerned about the aggressive timing though, and asked the tuner to back it off to 15 degrees. A few months later I popped that motor when I hit 10 psi passing another car just cruising to the gym. Later Steve found a -2 degree timing split at 10 psi, 7000 rpm which is right where it blew. I bet what happened was my tuner backed off the leading timing and messed up on the math to keep the trailing in check. I did have the turbo rebuilt, but the car never felt as strong. Even with much better porting and tuning. I estimate it was making about 400-415 rwhp then. I wish I did get a chance to redyno at 20 psi just to see what it would do. As far as I know, no one has broken 500 rwhp. I think I was the closest at 470. Is it enough power? Not for me:) 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...

Mitch (works2r) should have a to4r dyno

We will be doing some final test fitting this weekend and the kit should be ready for shipment by the end of march.

dibs on the first kit.... i need it https://www.nopistons.com/forums/pub...IR#>/smile.png

Dee...Glad to see you here. I am also interested in your setup. I'll give you a call tomorrow.

dee i am your bitch https://www.nopistons.com/forums/pub...1047683894.gif i will bring the car over whenever you want. hook me up....i need more power https://www.nopistons.com/forums/pub...IR#>/bigok.gif

Way.



https://www.nopistons.com/forums/pub...1047683621.gif Justin, did you ever sell the wheels.

I just read the thread at 7 club tonight.Man you were gettin crusified over your asking price. https://www.nopistons.com/forums/pub...IR#>/blink.png



Back on topic. Dee that sounds good please keep the forum informed. I will get with you sometime this summer for one for sure.

Thank you.

damn maryland is gonna have some realllly fast FDs soon...

and jersey!!!

Whatchutalkinbout Willis? Maryland already has some fast Fd's. https://www.nopistons.com/forums/pub...DIR#>/wink.png

No problem Dave. I will keep everyone posted.