There's a strong possibility that SRF will be the new header/crossover supplier for JME.

Time will tell.

 

Tony,
About those solid lifters, who's units are you going to use?
In the past i built quite many Hi perf V8's with solid lifters.They were very good, no need to adjust them often, except of some drag racing Chevy engines

 

I'm not sure. JME has them so does Huntley. I have no idea what it takes to install them, etc... Never done it.

I've used mechanical roller lifters for years in my Chevy V8's. Once set, they're as good as hydraulic and in most cases much better.

I wish we could get roller mechanical lifters!!! Then we could get some real good cam profiles. Much better than non-roller profiles.

Anybody have info on the mechanical lifters? (juicy details...)

 

Scott Gomes does this work also and claims that it can bring almost 100hp to a well prepared engine (ie. a turbo that can hold boost up past 8k rpm)

Sounds like Tony has all this done, but all the engine components need to be lightened, strengthened, and very carefully balanced since they will be rotating at higher RPM's.

There is a pretty standard technique of installing the same allen plugs on the top of the cam house into the side to check the valve lash. Of course this is just to check, if they are out... On most cars like Tony's, the balance shafts are gone as is most of the crap in the front of the engine. The top end of the engine can come off in few hours...

 

To run at 7000 rpms, I don't think you need to go through the bottom end. I would definitely recommend some good rod bolts for sure.


I've got the lightened knife edged crank, and the Carillos, no balance shafts, and a 5.5 lbs aluminum flywheel, and hopfully, someone balanced the reciprocating assembly :-)


I don't intend to run at 8000 rpms, but I would like to run at 7500, plus have some fudge factor (safety) built in.

It's just that the hydraulic lifters cut off the fun too early


I haven't seen Scott Gomes work personally. I only know one car that runs his head/cam. It is a 2.9L that made over 406HP to the wheels.


Now this is Steve Meck's car, and it's very much builtup in almost every aspect.


But notice how the HP stops gaining at 5000 rpms? IT's basically flat from 5000 rpms to 5700-5800 rpms, then starts to fall off.

This could be for a variety of reasons:

Stock headers

8cm Turbonetics KKK replica hot side

cam/head (It's got a pretty "lumpy" cam in it now and is equipped with larger than stock valves and the intakes have been ported at a minimum)

Anyway... the above dynochart, while providing excellent HP, is exactly what I did NOT want, and is why I've gone down the road I've gone down.

There is clearly more HP to be had on this example car (dyno sheet) if it were tuned to make its HP peak at 7000 rpms instead of 5000 rpms.

I suspect the turbine housing (8cm) plays a large part in the HP flattening off so early.

 

thanks for the responce tony.

 

Ok... so now Tony's got a ton of power, and wheels and rubber... and if you come racing in Febuary @ Las Vegas, I'm still going to inch myself a second ahead of you ... and if not, at least there will be some nearby craps tables with free booze...

Chris <img src="graemlins/beerchug.gif" border="0" alt="[cheers]" />

 

Dan87951,
Just curious about your comment about turbo lag. Have you ever driven a car with a big ballbearing turbo?

TonyG,

Cool!!!
Do you guys ever run with NASA? Some us may cruise over to WS w/our 944-Spec.com race cars this spring.
Paul

<img src="graemlins/beerchug.gif" border="0" alt="[cheers]" />

 

Now since you are the guinny pig, how about finally testing some different gear ratios for us, like 3:75-ish or 3:85-ish if it can be done cheap, nothing too radical like 4:11's on a stang, also how about showing us a video of the car in action, around town like rage did for us, that would be nice to see, oh yeah how about trying the big-big intercooler tim sells and show us if that helped a fast car get faster or just pick up 10 HP, that would be great information to know, pics dont tell us much but a short vid would be killer <img src="graemlins/beerchug.gif" border="0" alt="[cheers]" />

 

[quote]Originally posted by tecart:
<strong>Now since you are the guinny pig, how about finally testing some different gear ratios for us, like 3:75-ish or 3:85-ish if it can be done cheap, nothing too radical like 4:11's on a stang, also how about showing us a video of the car in action, around town like rage did for us, that would be nice to see, oh yeah how about trying the big-big intercooler tim sells and show us if that helped a fast car get faster or just pick up 10 HP, that would be great information to know, pics dont tell us much but a short vid would be killer <img src="graemlins/beerchug.gif" border="0" alt="[cheers]" /> </strong><hr></blockquote>

I second That!

 

Paul,
Why else would I make a statement like that if I haven't ever been a bigger turbocharged sports car?! Paul from the tone of your post it seems you have a different opinion well...please enlighten me to a big compressor setup that will also provide fast spooling because I sure would like to know. I have been in several RX7's and MKII Supra's with pretty big compressors. The turbo lag was pretty bad for a street car but once it kicked it hang on.

 

Dan,
I guess the "tone" of one sentence could been been taken the wrong way.
Lag or spool-up? Are they the same thing?
I think the lag argument is over rated just based on my personal experience of having 4 different turbo's on my 951. The stock was the worst push the throttle down and count. The best with the most HP/TRQ was a Technodyne custom BB set-up, push the throttle down and hang on. It is not a bolt-on and I am sworn to silence : ) Now that the weather has cooled down it is really quick.

<a href="http://pages.prodigy.net/pjbloom1" target="_blank">http://pages.prodigy.net/pjbloom1</a>

What is the size of a big turbo as far drag race Supra's. Is this the same as for a 951?
I havn't been in a Supra but I have seen dyno charts at Technodyne one is 850hp and it is basically a straight line up to a peak then right back down.
I guess that keeping that car in the power band or should I say "peak" is a driving skill in itself. Now that would SUCK on the street IMHO!
Merry X-Mas
Paul

 

Paul, that 951 is very beautiful. What kind of engine work and turbo do you have and the hp you quoted on that car was on what boost? That car is unbelievable!

 

[quote]Originally posted by tecart:
<strong> how about finally testing some different gear ratios for us, like 3:75-ish or 3:85-ish if it can be done cheap, nothing too radical like 4:11's on a stang. <img src="graemlins/beerchug.gif" border="0" alt="[cheers]" /> </strong><hr></blockquote>

would you want shorter gears w/ that much power, i would think you'd want to go a bit taller. (thinking maybe higher gearing would allow you to use more of the power in the lower gears ... can you go wide open throttle in 3rd w/o breaking free heheheh?) thing must pull like a frieght train <img src="graemlins/burnout.gif" border="0" alt="[burnout]" />

 

Just out of curiousity TonyG ... are you ever going to reply to my emails or PMs? I would like to see something for that money that I sent you.