gerg 10,871 Posted May 9, 2014 I remember reading about Chrysler Hemis having a highly tuliped valve, in the order of 25 deg or so. This is to take advantage of the straight port and chamber shape presumably. It must have made the flow go around the valve head and not out into the chamber and cylinder wall. I would love to have been alive at the time and working in this field when folks were pioneering stuff like this. Love your work by the way. 2 Clevo120Y and Outback Jack reacted to this Share this post Link to post Share on other sites
Trev Vaa 1,185 Posted May 12, 2014 funny you should mention that, i remember learning that from Rob Martini when he was explaining to me the basics of head flow improvements. he used to make alan moffats valves to spec to suit the heads for that reason.... 1 gerg reacted to this Share this post Link to post Share on other sites
gerg 10,871 Posted May 12, 2014 he used to make alan moffats valves to spec to suit the heads for that reason.... He'd know Peter Molloy, Moffatt's engine builder. Btw he's a bloke at work's uncle. Brilliant engineer so I hear. Share this post Link to post Share on other sites
Trev Vaa 1,185 Posted May 13, 2014 no doubt he would, have never asked, but he would have known everyone in the circle. he used to work ford Head Mod back in the day as well.... spent a lot of time working on the classics. according to him 10 years in your apprenticeship in cylinder heads... then the real learning begins. he still does a lot of the formula ford heads.... 1 gerg reacted to this Share this post Link to post Share on other sites
RAWDEAL 222 Posted May 13, 2014 I'm surprised people arent jumping for the P38s its looking like ill be going for the p38s for my build Share this post Link to post Share on other sites
NZXD 2,328 Posted May 13, 2014 I've been reading up on the p38 head, wow what an awesome piece of kit. Another head providing excitement with the US fox mustang guys is the trick flow 11r 190 and 205cc heads. They are really pumping out some numbers. Share this post Link to post Share on other sites
NZXD 2,328 Posted May 13, 2014 I've been reading up on the p38 head, wow what an awesome piece of kit. Another head providing excitement with the US fox mustang guys is the trick flow 11r 190 and 205cc heads. They are really pumping out some numbers. Share this post Link to post Share on other sites
RAWDEAL 222 Posted May 13, 2014 I've been reading up on the p38 head, wow what an awesome piece of kit. Another head providing excitement with the US fox mustang guys is the trick flow 11r 190 and 205cc heads. They are really pumping out some numbers. Its a good sign when the trickflow heads are banned from some speedway applications in the usa, and thats the only head in their class thats banned lol must be doing something right Share this post Link to post Share on other sites
NZXD 2,328 Posted May 13, 2014 Yeah for sure, ill be looking at the 11r heads when i build my 347. Share this post Link to post Share on other sites
Clevo120Y 815 Posted July 13, 2014 The engine lives!!! hopefully it goes to dyno very soon so I will let you know how it goes. 3 Trev Vaa, Outback Jack and xbcool reacted to this Share this post Link to post Share on other sites
ando76 4,354 Posted July 13, 2014 and doesn't it just look the biz in that early bay. Good update sean, keen to hear dyno figures. Don't forget to add the torque figure as well please. 1 Clevo120Y reacted to this Share this post Link to post Share on other sites
Outback Jack 6,352 Posted July 13, 2014 Mmmmmmm........ looks great Clevo120Y. Shiney...... hope ya pull some serious numbers =) . Jack. 1 Clevo120Y reacted to this Share this post Link to post Share on other sites
Clevo120Y 815 Posted August 27, 2014 Got a text from Wayne and the little 302 pulled 360rwhp but the smaller headers were leading to it falling over so some bigger pipes are on the cards in the future, still not power for a little Windsor. 3 Outback Jack, Trev Vaa and gerg reacted to this Share this post Link to post Share on other sites
Clevo120Y 815 Posted September 1, 2014 Found out today that the little 302 pulled 750NM or 555 ft/lbs of torque at the rears, that's fair grunt. 3 Outback Jack, Trev Vaa and Hofiveo reacted to this Share this post Link to post Share on other sites
Clevo120Y 815 Posted September 1, 2014 2 Outback Jack and Trev Vaa reacted to this Share this post Link to post Share on other sites
Outback Jack 6,352 Posted September 1, 2014 Good shit Clevo , Go the 302! Love a nice looking 5L. Hope ya doing well down there and didn't get too flooded last week. 120mm here in 6 hours.... spare ute almost floated away.... hehe. Jack. 2 Trev Vaa and Clevo120Y reacted to this Share this post Link to post Share on other sites
NZXD 2,328 Posted September 1, 2014 Hope the guy is happy with that result, I would be. 1 Clevo120Y reacted to this Share this post Link to post Share on other sites
gerg 10,871 Posted September 1, 2014 I don't understand that torque figure. Is that rear wheel torque or is it calculated back to the flywheel? Share this post Link to post Share on other sites
Clevo120Y 815 Posted September 2, 2014 Rear wheel as far as I know, comes up on the converter right in the fat spot. Share this post Link to post Share on other sites
Clevo120Y 815 Posted September 2, 2014 Good shit Clevo , Go the 302! Love a nice looking 5L. Hope ya doing well down there and didn't get too flooded last week. 120mm here in 6 hours.... spare ute almost floated away.... hehe. Jack. Wasn't too bad down here mate, first decent rain for a while, mostly on and off dribble for months. Share this post Link to post Share on other sites
ando76 4,354 Posted September 2, 2014 gerg the data sheet says torque rear. That's a mainline dyno and they are pretty good imho. I think you get more accurate torque readings from an engine dyno tho as it does have wheel slip, loose straps etc to contend with. Great numbers Sean and in an early falcon that power will be a lot of fun. 2 gerg and Clevo120Y reacted to this Share this post Link to post Share on other sites
gerg 10,871 Posted September 2, 2014 Ok that clears it up. I just couldn't get my head around a 302 making big-block torque, but that figure is after torque multiplication from the rear-end combined with loss/slippage in drivetrain. Just wasn't sure if this figure had been calculated back through diff ratio and converter, etc. There's definitely much more accuracy in measuring at the fly but doesn't translate to real-world power as a chassis dyno does. Very impressive figures from the little Windsor, a very stout performer. Well done to whoever screwed this one together. Share this post Link to post Share on other sites
ando76 4,354 Posted September 3, 2014 Most certainly and impressive looking package. Yeah it is really a toss up on the chassis dyno vs engine dyno front. For an engine like slydog's crossy I would go engine dyno as it would help in selecting convertor and tune. Big convertor cars on a chassis dyno can me a little tricky. But in reality you have to do both anyway as when the engine goes into the hole and is hooked up to the tranny and its own fuel system - extractors etc it usually requires a small amount of finessing anyway. Share this post Link to post Share on other sites
Clevo120Y 815 Posted September 3, 2014 Wayne Smith from "performance carb tuning" in Perth is the owner and the guy who put it together. 1 gerg reacted to this Share this post Link to post Share on other sites
Clevo120Y 815 Posted September 19, 2014 The XL run down the strip on Wednesday, 11.6 at 114mph, a problem has been discovered, the valve springs that got put in are only 110lbs on the seat which isn't enough for the roller cam, a change of springs is being done soon. We thought the headers were limiting the revs and power it seems to probably be valve float so more power to come from this nasty little 302. 2 gerg and NZXD reacted to this Share this post Link to post Share on other sites
