To be completley honest I don't know that anyone has. Seems like they don't need to as the current 13B record was done on 40psi 1pc seals. I know Jose will be pushing around 50 psi and Enzo will be too. Both on 2pc, Jose on 2mm and Enzo on 3mm.

 

It will be interesting to see how Ernie's engine goes. He has 3mm 1pc but he also has now 3mm ceramic corner seals. Hopefully they will be able to quantify and record the gain given by the corner seals as they already have the baseline for the engine with 3mm 1pc and steel corner seals.

 

I've already pushed 42psi on the 3mm NRS seals. They hold up incredibly well to heat.

 

I spoke to Jose and he said that the most he has made was 1295 at the flywheel at 40lbs on his Peripheral port turbo on a engine dyno so 50 lbs should be interesting .

 

Boost doesnt matter on what the engine can take. Its the power the engine makes. The more power, the more strain, not boost.

 

running higher boost levels help in faster flame front propagation which helps to make more horsepower .

 

i have these in my car, they are davin approved!

 

jose will be testing the nrs very soon..

 

A compression test has been done on the 4 rotor on friday after 75 min of running. And almost done all mapping up to 5500 rpm and 75% throttle. The numbers are,

1 dead even 6.5kg at 217 rpm
2 dead even 6.1 kg not sure about the rest.
3 dead even 6.25 kg
4 dead even 6.35 kg

Now the diffrence in pressure is mainly due to the variance in rpm. As none of them had the same RPM. The firs one had the highest RPM number.

Now the engine has about 3 hours of running. And mapped up to 8200 rpm, and made 469,7rwhp at 8200 rpm and 360,9lbs of torque at the fly. The fly hp was 550 something. It was picking up 50rwhp for every 500rpm. So once it's properly run in on this map. The engine will get a CDI ignition system and a complete remap.

Now i will need to buy a digital comp tester, so that i can messure the comp after every time i have it on the track.

JT

 

Now i see your rpms on the compression tester. Mazda says on the scale digital tester min 5 kg at 200 rpm and 7 kg at 300 rpm. I think it will be definetely higher numbers as you keep driving for more hours. I bought mine compression tester on Ebay Usa from Pine Apple Racing, good investment!

/Lasse

 

Update on Jose Leduc's Rx3. Yesterday sunday at englishtown, NJ Jose tested his rx3 with the metal seals. He ran 4 runs starting with 8.3 and finishing with a 7.5@176mph to be fair to the NRS ceramic seals, Jose warpped his metal seals on the last run. He leaned out the mixture a little and the metal seals curled up(something I don't think will happen with NRS). Current status. Jose will be pulling his engine out this week, and will be installing the NRS rotorsports seals and testing sunday at atco raceway. I'll be there present gathering information on the NRS seals.

 

Nice numbers Ito. Good luck next week with the NRS seals.

 

I'll be running Sunday as well, I can't wait to see the results of your testing.

 

Leduc decided not to go this sunday. i'll keep the site up to date, next time he goes out it will be with the nrs ceramic seals.

 

And my car is still not done. I hope sometime soon.

 

Ernie, isn't your GT42 waaay maxxed out @ over 40lbs anyway... will you be running the new NRS seals on a more capable/efficient turbo? (Also, were you at full boost/wick on ur 9.95@138pass?) Thanks...

 

Yes, thats why I got a bigger turbo for this setup
And no, my 9 sec pass, I was way down on compression due to faulty corner seals, hense why I now have the ceramic corners as well. The week prior I was trapping 149mph. I was gettting alot of blow by. No worries, whenever the new setup is done, it will be killer

 

149mph on a GT42? Sick brotha! Can't wait to hear how she does on the new NRS seals & corners... BTW, were u running the NRS seals on the 9.9pass as well? (just not corners) Or something else at that point....

Keep us in the loop and get her running and to the track already!! We wanna see 45PSI on your bigger turbo & BIG numbers

 

Yes the 9sec pass was on the NRS apex seals, but I was using Atkins one piece corners. BAD IDEA! I spiked as high as 44psi on the 42R 74mm. I now have the 42r 80mm with stainless a/r

 

In about a weeks time I will have some thicker c.s. springs. The FD spring is 0.016" thick, I am having some 0.020" and 0.025" springs made for testing. Likely we will not hard face them just yet, that can be done after when we have a better idea which thickness is best. I will supply Ernie with a set of each thickness and the next time the engine is out he can throw in the 0.020" thick springs followed the next time with the 0.025" thick. Unfortunately it will be a lot of work just to change the springs but it's the only way to know for sure what can be done and what works best. I'll put up pics when the springs are finished.

 

Will this new process be used in production of the one piece seals also?

Thanks
Allen

 

Yes, any and all parts made will have this processing done.

 

i did 23 4th gear dyno pulls saturday and ended up at 506 at 20 psi running 93 octane pump and methanol. knock averaged 20 on the lowest P line. IGL 13.5 w 11 split. EGTs 1600.

on one piece 2mm NRS seals and springs. given the low knock they didn't have to work too hard. i will be going to a higher wastegate spring to tune out at 27 psi w my twin TO4s.

of course evryone on this thread makes mega hp so my 506 isn't a headline but my motor is happy.

thanks Sven.



howard

 

Thank you Howard, glad to know you.

 

Ernie might get the engine fired by this weekend and he has promised to let us know how it goes on the dyno. I cant hardly wait to get his impression of how the corner seals act. With the bigger turbo and now a bridge port we don't have a direct comparison so we'll see what the #'s look like anyhow.