Posted September 3, 200519 yr comment_136877 I have built my 2nd prototype engine, in a bluebird wagon.It has stock carbie, stock cam, plugs are 3 heat ranges up.I have matched and slightly enlarged the ports. The valves are thinner that normal and i have found there resistance to reverse is flow is better than a typical valve with 3 angles at low lifts.I have been jumping on the gas today and here is a short file.Its a 4 cylinder can anybody make guess what my Peak RPM is?I can hear the engine accelerating a lot faster above ~6000 RPM I think its up around 8000 RPM.added pitch shifted files 5/10/2005reving high2.zip Link to comment https://www.classiczcars.com/forums/topic/17139-before-i-port-my-z-i-will-prove-it-on-a-4-cylinder-first/ Share on other sites More sharing options...
September 3, 200519 yr comment_136881 Sound likes an air tool pitch/time shifted in some audio software.Do you even own a car? Link to comment https://www.classiczcars.com/forums/topic/17139-before-i-port-my-z-i-will-prove-it-on-a-4-cylinder-first/#findComment-136881 Share on other sites More sharing options...
September 3, 200519 yr Author comment_136887 Thanks for the commentsSound likes an air tool.pitch/time shifted in some audio software.Do you even own a car?The only adjustment was to increase volume by 500% then a futher 289%I am using some walkman headphones cost $1.00 at crazy clarksI was using a small speaker before but it runs of of dynamic range.I have 2 licensed cars atm.here is a previous recording (sorry for the clipping and using server space) PS the cam is too advanced and the ignition static timing is as 5 ATDCso thats 13 degrees less than recomended.I know its sounds hard to Believe, but im trying to do something that has not been done before, correct me if im wrong please5 ATDC jumping on it engine hot.zip Link to comment https://www.classiczcars.com/forums/topic/17139-before-i-port-my-z-i-will-prove-it-on-a-4-cylinder-first/#findComment-136887 Share on other sites More sharing options...
September 3, 200519 yr comment_136889 please elaborate on what exactly you are doing that has not been done before, i would love to hear about it Link to comment https://www.classiczcars.com/forums/topic/17139-before-i-port-my-z-i-will-prove-it-on-a-4-cylinder-first/#findComment-136889 Share on other sites More sharing options...
September 3, 200519 yr Author comment_136904 When I fully understand what is going on I wont have much time to sparesome details I read on the net somewhere that someone (aka smokingwheels has) will make an Internal Cumbustion Engine that is fired when the piston is on the down side.Thus ive found you can have really high compression ratiosMy 1st engine had a chamber volume of 33 cc ~11.5:1My 2nd 38-39 cc ~ 10.5:1My 3rd engine hmm a diesel engine converted to fuel ~20:1Have a look sum of my results at www.smokingwheels.myphotoalbum.comSum of this data was the first attempt in 2002I had a program which I used and wrote in MS QuickBASIC that timed the spark, with a little interface to the printer port of a computer, Pic is loaded on this siteI only found out last month that spread sheet was out by a factor of 2* in its calculation for the timing, thus the engine didnt go very good until you hit 3000 rpm.When above 3000 rpm the maximum total advance to stop knocking needed to be 3-4 degrees btdc this was confirmed with timing light, so that also says there was no load on engine.I have done simlar tests on as std engine you can advance ~20 up before it starts knocking with no load. It also used to foul plug at a alarming rate and 3 heat ranges up, eg maybe 1000 kmSTD plugs well i was lucky if i got 30 mins.I replaced everthing electrical but still not much betterIn the end I reduced the compression to ~8:1 and rewrote the program to work better.I then got another 8 Months out of this engine before the conrod bearings when again, i did a shifty repair used 20" and 30" shells.anyway im still scraching my head nowbut not pulling my hair out anymore Link to comment https://www.classiczcars.com/forums/topic/17139-before-i-port-my-z-i-will-prove-it-on-a-4-cylinder-first/#findComment-136904 Share on other sites More sharing options...
September 3, 200519 yr comment_136918 What I am failing to understand is what is "prototype" about your engine? It seems all you are doing is modifing timing, spark, ECU, compression ratio and valve angles. Then you mentioned something about firing the piston on the downside- what does that mean? When the piston is on the stroke heading down? On the intake or power stroke? Unless you are altering the way the engine works, it's nothing more than modified- not a "new" engine. Dave Link to comment https://www.classiczcars.com/forums/topic/17139-before-i-port-my-z-i-will-prove-it-on-a-4-cylinder-first/#findComment-136918 Share on other sites More sharing options...
September 3, 200519 yr comment_136920 He's firing the charge ATDC. Sounds like trying to pee up a rope to me. Link to comment https://www.classiczcars.com/forums/topic/17139-before-i-port-my-z-i-will-prove-it-on-a-4-cylinder-first/#findComment-136920 Share on other sites More sharing options...
September 3, 200519 yr comment_136921 smokingwheels said: Any comments would be AppreciatedI think you are playing in the wrong sandbox for your age/iq. Link to comment https://www.classiczcars.com/forums/topic/17139-before-i-port-my-z-i-will-prove-it-on-a-4-cylinder-first/#findComment-136921 Share on other sites More sharing options...
September 4, 200519 yr Author comment_136965 Ok well sounds like you guys are not intrested or dont belive what you are reading that ok I will post more results a lot later on After Ive finshed working on a Friends V8 sum 6700 cc of an airtoolNow thats sum airtool to play with it has got the usuall performance modsBut before i go and have more fun think about this PicNo fancy timing light just a 1 sec exposure on a camnote: if i retard the timing any more i cant see the mark in the picsI would like to hear anybodys engine rev at that setting.Ps: where would i buy a L20 B block that could put out 600 Kw for my headcheers Link to comment https://www.classiczcars.com/forums/topic/17139-before-i-port-my-z-i-will-prove-it-on-a-4-cylinder-first/#findComment-136965 Share on other sites More sharing options...
September 11, 200519 yr Author comment_137731 Did the Garbage Bag test today.yep measured how long it took to fill one with exhaust fumes.I think it was a 40L bagmy normal 2L engine at idle filled the bag in approx 11 seconds.my modified engine at idle filled the bag in approx 5 seconds.the modified engine was running slightly faster than the normal engine thoughat a guess it was in the order of 100 rpm faster i will need to correct this and then do more testshmmm that engine sucks Link to comment https://www.classiczcars.com/forums/topic/17139-before-i-port-my-z-i-will-prove-it-on-a-4-cylinder-first/#findComment-137731 Share on other sites More sharing options...
September 11, 200519 yr comment_137795 Mr Camouflage said: Sound likes an air tool pitch/time shifted in some audio software.Do you even own a car? i'm with you. Link to comment https://www.classiczcars.com/forums/topic/17139-before-i-port-my-z-i-will-prove-it-on-a-4-cylinder-first/#findComment-137795 Share on other sites More sharing options...
September 11, 200519 yr comment_137799 Can't see his posts anymore (ignore list). Dude's got issues! Link to comment https://www.classiczcars.com/forums/topic/17139-before-i-port-my-z-i-will-prove-it-on-a-4-cylinder-first/#findComment-137799 Share on other sites More sharing options...
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