If you get to do some testing get some profile shots all the way through the launch. Including the bounce. Might be illuminating. Chuck


Y's guys rule!
Looking for McCullouch VS57 brackets and parts. Also looking for 28 Chrysler series 72 parts. And early Hemi parts.

MoonShadow, 292 w/McCulloch, 28 Chrysler Roadster, 354 Hemi)
Manchester, New Hampshire

It still hops up and down and John Hildebrandt suggested us to raise the pressure to rear tyres until wheels start to spin at launches. Just to see does it help over that issue. Too bad season is over and we have to wait until May to have it back on the track again. And about those stacks, we haven't tried them yet. So, we don't know how much it does to airflow. Well, maybe I have to google that thing to learn some more. This year we went with very tight budget (as always!) and those didn't even came to my mind...

 Seppo from Järvenpää, Finland
www.hollowheads.net (just click the hole in the head to proceed)

have you tried tapered inlet pipes on the turbo's? like bell mouth stacks on a carb! just a thought!

 lincoln/merc. y-blocks &mel's                                                               bucyrus, ohio.

He leave at the bottom looks pretty good. Is the car still bouncing when it comes down? Chuck


Y's guys rule!
Looking for McCullouch VS57 brackets and parts. Also looking for 28 Chrysler series 72 parts. And early Hemi parts.

MoonShadow, 292 w/McCulloch, 28 Chrysler Roadster, 354 Hemi)
Manchester, New Hampshire

And here is two nice pictures about our last race at Motopark Raceway...




 Seppo from Järvenpää, Finland
www.hollowheads.net (just click the hole in the head to proceed)

As season is over and dragster standing at my garage, we have time to figure out new ideas. We found two nice covers for our turbo inlets from yesterdays Swap Meet and now we have no worries about bugs crawling into them . Actually those are old KC off road lamp shields.




 Seppo from Järvenpää, Finland
www.hollowheads.net (just click the hole in the head to proceed)

I run two different sets of tires and wheels; a set of wider and shorter tires for normal bracket racing and a narrower set with much narrower wheels for ‘quicker’ runs.  The narrower set of wheels allows the tires to grow another 3-4” in diameter which helps the topend charge.  My rpms going through the traps are in the 6600-6700 rpm range.  It’s because I do have some rpms left at the top end of the track that I’m considering more rear gear.  Converter slippage is minimal in my case also which may be a player in your combination.

Lorena, Texas (South of Waco)

Interesting... We have 33 x 14.5 - 15 tyres and we are suffering lack of speed and revs as we have only 7200 rpm at the finish line due home ported C0AE heads. That's why I consider gear change as an option to get more speed, if our engine makes power enough to launch it hard with lower gears. So, as I assume, your engine revs much higher at the end, what is your point to get more gears? Our 60 feets are almost equal, but we have issues with bouncing and slipping.
http://ammikanala.kuvat.fi/#/kuvat/Auto+siellä,+toinen+täällä/Blaklader+Finals,+part+II/_MG_4344.JPG



 Seppo from Järvenpää, Finland
www.hollowheads.net (just click the hole in the head to proceed)

The converter stall is 4500 rpms.  I’m currently running 4.30 rear gears but considering switching to 4.44's or 4.56’s.  I’ll not be doing any gear changes until later in the year though when the temperatures are cooler.

Lorena, Texas (South of Waco)

8.660 is made with 1.93 Bar / 28PSI of boost but when fuel pressure was too low, air/fuel ratio was too lean before finish line. 




Hyvinkää, FI