little dave Posted January 2, 2013 Author Share Posted January 2, 2013 quick one do i need to have my light weight pulleys when i have the bottom end ballanced up? Quote Link to post Share on other sites
james@cjperformance Posted January 2, 2013 Share Posted January 2, 2013 just the crank Quote Link to post Share on other sites
little dave Posted January 2, 2013 Author Share Posted January 2, 2013 thanks still learing as i go along Quote Link to post Share on other sites
Starbo Moorley Posted January 2, 2013 Share Posted January 2, 2013 I sold a set to a guy on ebay and kept in touch with him, he is running a vf30 @1.6 bar for the past 11 months at standard rev limit, will be going for more boost and revs come the summer once we have sorted a nice inlet and bigger exhaust the manufacturer has tested them against the scat rods the design was based on and there is no difference between them and yes the block will need notching Bit of topic (sorry) but what power is tge above car making ? Quote Link to post Share on other sites
james@cjperformance Posted January 2, 2013 Share Posted January 2, 2013 was road mapped dude, once he has the inlet done and the other bits sorted and maped again he will be doing some power runs, quite looking forward to it tbh Quote Link to post Share on other sites
AdamB Posted January 2, 2013 Share Posted January 2, 2013 quick one do i need to have my light weight pulleys when i have the bottom end ballanced up?You'll need, pistons, piston pins, piston rings, circlips, rods, crank, clutch assembly and crank pulley Quote Link to post Share on other sites
_shaun_ Posted January 2, 2013 Share Posted January 2, 2013 (edited) sorry to jump the thread but seems pointless to start another one for same thing. trying to make up a list of parts needed to get car up and running so i can slowly pick up parts. anyone got any input on the following or anything ive misseddonor 5epistonsrodsbearingsoil pumpwater pumpgasket kitzisco valve springszisco valve stem sealsheadgasketarp headboltslightweight pulleys3e fly wheelclutchtiming belt kitarp crank boltsfueluprated fuel pumprrfpr+ gaugeinjecorsignitiontype r coil'snew spark plugsecu- dta s60pro unitcustom loomcam sensor crank sensor and trigger wheel4bar map sensoroil pressure sensor (after market)oil tempt sensor (after market)throttle body+ tps to be decidedair intake sensor (after market)fuel pressure sensor?and of course a turbo kit+fmic Edited January 2, 2013 by _shaun_ Quote Link to post Share on other sites
Ryan-11 Posted January 2, 2013 Share Posted January 2, 2013 new timing belt kit and maybe arp crank bolts Quote Link to post Share on other sites
_shaun_ Posted January 2, 2013 Share Posted January 2, 2013 timing belt good point ha. do you run the crank bolts yourself? doesnt seem to be much info on them as to when they should be used Quote Link to post Share on other sites
Ryan-11 Posted January 2, 2013 Share Posted January 2, 2013 Yeah i used them, I just got all the arp bolts that were available for the starlet at the time. Quote Link to post Share on other sites
_shaun_ Posted January 2, 2013 Share Posted January 2, 2013 sweet my main concern is realy the ecu side of things. you dont happen to have an e-mail for russ do you? might give him a shout see what he would sujest Quote Link to post Share on other sites
Ryan-11 Posted January 2, 2013 Share Posted January 2, 2013 Hmm.. nope but i think my mate has it, ill get it off him, ive got his facebook if that helps? Quote Link to post Share on other sites
_shaun_ Posted January 2, 2013 Share Posted January 2, 2013 that would be great if you could dont use facebook sadly Quote Link to post Share on other sites
Ryan-11 Posted January 2, 2013 Share Posted January 2, 2013 ok cool, ill get it and pm u at some point Quote Link to post Share on other sites
_shaun_ Posted January 2, 2013 Share Posted January 2, 2013 legend cheers Quote Link to post Share on other sites
_shaun_ Posted January 2, 2013 Share Posted January 2, 2013 should realy ask whats the logic to picking injector size? Quote Link to post Share on other sites
shorty Posted January 2, 2013 Share Posted January 2, 2013 Injector size realy depends on your mapper tbh dude, you idealy need to be close to maxing as you dont want a 1000cc injector at 50% duty as you get more of a dribble than a spray. maybe drop grant a lil pm, not sure how much he knows of dta but he has built his own standalone megasquirt kit, loom, sensors, ignition system etc etc, take a look at his shrek build. lol hes fookin nuts! His car is race standard not modded car lover standard ;) puts the pp boys to shame when they had the green on lmao. Quote Link to post Share on other sites
shorty Posted January 2, 2013 Share Posted January 2, 2013 Oh also athena headgasket, nothing but!!! I've ran oem and cruise and they are shit athena are fantastic! I only use them now and also arp'd the shit out of my engine last time i gave it a refresh. but i just like adding to the engine spec list lol mine silly now haha Quote Link to post Share on other sites
_shaun_ Posted January 2, 2013 Share Posted January 2, 2013 Injector size realy depends on your mapper tbh dude, you idealy need to be close to maxing as you dont want a 1000cc injector at 50% duty as you get more of a dribble than a spray. maybe drop grant a lil pm, not sure how much he knows of dta but he has built his own standalone megasquirt kit, loom, sensors, ignition system etc etc, take a look at his shrek build. lol hes fookin nuts! His car is race standard not modded car lover standard ;) puts the pp boys to shame when they had the green on lmao.will fire him a some what long message later have been keeping track of his built its mental but wasnt sure if anything from the megasquirt would carrie over to the dtaOh also athena headgasket, nothing but!!! I've ran oem and cruise and they are shit athena are fantastic! I only use them now and also arp'd the shit out of my engine last time i gave it a refresh. but i just like adding to the engine spec list lol mine silly now hahaaye plan to get an athena just dont no what size so will wait till the actual engine build. ill prob just get the arp crank bolts for the sake of a few quid Quote Link to post Share on other sites
shorty Posted January 2, 2013 Share Posted January 2, 2013 Alot of the loom, ignition etc is custom bits not megasquirt specific iirc. Quote Link to post Share on other sites
_shaun_ Posted January 2, 2013 Share Posted January 2, 2013 aye thats a fair point . can price everything up right untill it gets to the sensors then the fun begins not sure if same sensors will work on both the dta and megasquirt. the temptation to get a charge cooler so the 4paw can look totaly stock with no intercooler is tempting lol Quote Link to post Share on other sites
AdamB Posted January 2, 2013 Share Posted January 2, 2013 should realy ask whats the logic to picking injector size?Injector size depends on the fuel pressure you want to run, this could be chosen by your tuner. Generally speaking I myself don't like to see anything over 3.5 bar, increasing the fuel pressure makes it increasingly harder to control the injectors. Since fuel pressure is done as a mechanical means, and the injector switching is done electronically this is how it comes about.There is a forumla to work out what size injectors you need relative to your fuel pressure and horsepower target. I shall dig it out for you mate Quote Link to post Share on other sites
AdamB Posted January 2, 2013 Share Posted January 2, 2013 Ok found it here goes lolFuel Flow (cc per minute) = (Horsepower Target* 5.6) / Number of cylindersSo say for an example for you Shaun:Fuel Flow (cc per minute) = (400bhp * 5.6) / 4Fuel Flow = 560cc Per minuteThe next step is to look at what size injectors we need to provide this fuel flow of 560cc.Injector static flow = (TF*100) / ( N*F)Where TF is the Theoretical flow rate which we worked out to be 560cc.N - Number of Injectors per cylinderM - Maximum duty cycle of our injectorsSo lets plug some numbers in:Injector Static Flow = (560cc*100) / (1*90)Injector Static flow = 622.22cc per minuteNow to include our fuel pressure we use the following formula:Revised Static Flow = SF * Sqroot (RP/OP)SF - Injector static flow at manufactures standard pressure (usually tested at 3 bar)RP - Revised Fuel pressureOP - Original manufacturers standard pressureSo say we use SARD 550cc injectors which were tested at 3 bar fuel pressure.Revised Static Flow = 550cc * Sqroot (3.5 bar/2.4 bar) 3.5 bar as to increase flow rate of our 550cc SARD, and 2.4 bar is the stock base fuel pressureRevised Static Flow = 664cc per minute.So we can see that if we choose the SARD 550cc injectors, increase the fuel pressure from 3 bar of which they were tested at, to 3.5 bar, we get 664cc per minute, which is more than we calculated above of 622cc per minute.Conclusion is that at 3.5 bar fuel pressure, SARD 550cc injectors will flow enough for Shaun's setup of 400bhp.Hope that helps Quote Link to post Share on other sites
little dave Posted January 2, 2013 Author Share Posted January 2, 2013 I take it this is a rule of thumb working out so would it be wise to add abit on ? Quote Link to post Share on other sites
shorty Posted January 2, 2013 Share Posted January 2, 2013 Adam thats awesome!! Needs to be cut and pasted to wiki for future use! And no dave its not a rule of thumb lol its maths so as its the pricipal of fuel flow rates id say "adding a bit on" throws the maths out the window lol. if you have the correct info to input for any car then the maths equations will still be the same equations. Quote Link to post Share on other sites
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