funny, I thought this was you at first: http://members.iinet.net.au/~dcollins/silfiniti/ (similar name)
Take that Rob And he's a Perth zedder too! Now hurry up and finish that datto so you can form the Perth 450zx club.
Axe 450ZXTT, yeah he (slim) was selling some engine mounts etc for the conversion in 2005(?) but no longer does. Cool car hey!
VH45DE Dyno curve (timing adjustment_2) I have compiled some interesting stuff about the VH45DE in here, its part of my portfolio for the conversion Im doing. I hope that you guys find this interesting http://www.yourfilehost.com/media.php?cat=image&file=VH45DE_Dyno_new_guides.gif The dyno curve also equate to a consevative 310hp@fly. only from that curve ~190lbft torque at ~840rpm, which using the rough .747 powertrain ESTIMATE losses we get 254lbft@840rpm which lbft to Nm x1.333 = 340Nm Ouch! it also made ~252lbft at 3200-4800rpm which is (252/.747)*1.333= 450Nm stock it made 100Nm/L for comparatibve sake the 1996-2003 BMW V8 from the E39: The M62B44 is a 4.4 L (4398 cc) version with a 92 mm bore and 82.7 mm stroke. Output is 283 hp (210 kW) at 5750 RPM with 310 ft?lbf (420 Nm) of torque at 3900 RPM. http://en.wikipedia.org/wiki/BMW_M62#M62B44 More on the VH45DE after ingition timing adjustment: http://www.yourfilehost.com/media.php?cat=image&file=VH45DE_Dyno_new_guides.gif The dyno curve also equate to a consevative 330hp@fly! (or ~250kW)
Dude, see the below bit in bold... you lose 25% of your power thru ur drivetrain? fark, throw it away man i thought losses were more like 10%-15% and how come ur estimate is to 3 decimal places? that sounds more accurate than any of ur other info which are rounded to 2 significant figures~ haha
it was late, it was very conserative. Many engine builder etc still use the old 27%, which was quantified from old TH350 engine dyno vs rolling road tests. I never really felt that this was greatly applicable to a manual gearbox or modern Autos, but i dont have anything to back up my (18% I like to use) power loss through drivetrain. I dont think its quite 10%, suppose for ease of use take 15%. 3SF etc yeah, sometimes i look too deeply into it. Some of the stuff at work uses 4SF and then by the time your finished calculating the forces and volumes out you can have an error of nearly 5%, so its probably just habbitto carry so many figures. At the end of the day, this is an awesomely "torquey" and powerful engine, with VCT you will see the dynamic CR much lower than the static 10.2:1, which say its going to come out as 9:1 is still very boost friendly, I would be more inclinded to see an actual high 8.x:1 CR. Time will tell - there are a few people running these/ about to run these motors... lets see what they bring?!
percentage. Boys, take yor drive train percentage figures and throw them out the window, that is childs play, it is ridiculous to say that 15, 20 or 27% of power will be lost through the drivetrain, basic engineering principles will tell you that is is a fixed power figure per component that absorbs a certain amount of power depening on a few factors. by the percentage idea, my suzuki sierra with all of its 75 flywheel horsepower would loose 22 hp or so, but if i put a 1000hp motor in front of the same driveline i would loose 250hp. I dont think so!!!!! with a zed as a guestimate i think it is safe to figure a 75 hp power loss. thats only my humble guess though
yeah, that isn true it is almost a fixed value, slightly influenced by the actual input power. Unless you are comparing something that goes from 200 hp to 900hp it is still highly relevant. But point conceded its essetially a given value to overcome and not a tramsmission % loss. My example above, if you rework it with 75hp instead of a % is still very accurate. rollin_on_18_strong is correct in saying it is not a %. Taken as 75hp: 75/280hp=0.268 or 27% 75/310hp=0.242 or 24% 75/330hp=0.227 or 23% so fairly close all round at these figures. 330*(1-0.268)=242hp 330*(1-0.268)=255hp difference = 13hp or (5.4%) The only thing that using 75hp (for example) does is make the back calculations show an error of up to 5.4% in this situation. Although you would see an error of 23.1% when comparing 200hp to 900hp. so the % estimations really only "work" (for lack of a better word) from 200-500hp. The problem is i dont know anyone who has run their drivetrain set up and measured/dynoed the out put power knowing the specific input power? anyway, power at the engine means nothing, we are only concerened with the power at the wheels right?
yes Yeah i think the percentage idea comes from the fact that most people are in the 200 to 500 hp range, as you know, the only real way to do it is to run your motor on an engine dyno and then on a chassis dyno, but this is impractical, i think as zed owners we should take an average of saw 3 well performing stock vehicles and subtract the wheel pwer from the the factory engine figure, I recently saw a 297 6 speed manual clubbie lay down 235 RWKW so there is a significant 62 kw loss there. but like you say the wheel power is all that counts. i think owners just like the warm and fuzzy feeling when they add 25% to their dyno figure
Hahaha, i shouldnt complicate things but, I have a MOTOR mag article where a brand new 250kW (when the LS1 or whatever were - Wow man that new!) and they dynoed it, back to back against a R32 GTR that had Std turbos and was running stock boost etc.... now how does a "250"kW rated engine make less power at the wheels than a "208kW engine?, that bieng said we all know that GTRs are not only "208kW" the gtr put down 212rwkW... lol go the Jap "power cap" pfft no such thing. will chase up the article and PDF it. That brings me to the next point, MODERATORS i have many useful magazine article etc and Z32 test articles, do we have a section for PDFd articles? sorry no havent searched yet
Holden kw figures I have heard from a few different people that Holden engine kw figures are based on an engine that is not running any accessories....no ac, no ps pump, no alternator and no water pump. Whatever it needs to run is pumped in from external sources. I don't know if this is true or not....but might explain some of the power loss.
Many of these imports put up for mags have been modified (we all know how easy it is to get power in the early stages). I still don't believe that the Japs would lie to that extent. Have a look at the zed power rating. Any here with a TOTALLY stock zed with 212rwkw? Anybody? BTW stock turbos and stock boost does not mean a stock car.
Ummmmm correct me if im wrong but isnt this how every manufacturer get their power rating (with fwkw or fwhp)?
why dont you guys just do a basic corvett v8 conversion they pull heaps of hp and their kinda cheap instead of putting holden or ford engins in your cars, what you want to do is make ur car light as possible and put bigger engin in to help you move faster, or just work the standard 300zx tt engin to make power you are looking for. either way its gona cost you money.
20% of 297kw is 59.4?????????.add in dyno inaccuracies and weather then that?s really not too bad. It?s normal. Most totally stock zeds here would have around the 170-185. I know the first time I dynode my car at the 300zx dyno day I had 170 something rwkw, so somewhere in the region of 17-20 % drive train loss.
I'm in the middle of 94 vette Lt1 build for my Z My mate is meant to be getting a final dynotune this week on his Z with a 91 vette TPI in it, so will hopefully get a pic of dyno sheet and maybe some vid to post. Think it is all stock internals at this stage. He said his car is sitting nearly an inch higher at the front compared to when the TT motor was in it, so has saved some weight somewhere.
there is also the 12.79(?12.89)1/4mile time that an R32 GTR can do, you should need well over 240kw to do that in theory?, anyway most people in the know are willing to place the GTR power figure at ~240-250 std. Power=torquexRPM why does a R32,R33,R34 all make progressively mpore torque but "no more" power? Why does (i will try and find it) a VH45DE make only "207kW"? when stock Q45s put more at the wheels?... I dont think its too hard to believe that the GTR makes at LEAST 230kW stock/std. (well for now thats only my opinion and i cant prove it for now anyway)
Would love to see a breakdown (kit like). Something like what you get when buying a kit from someone. A list if you like of all the parts required and their associated cost and time frame to build.
