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My sportscar engine

Posted:
Sat Jun 15, 2013 8:57 pm
by 09webbad
I have made an engine for my (relativity) affordable (£80,000 or $125,000) lightweight sports car hence its high RPM. This baby is going to be the power-plant of what I'm going to call: The Genia 8C. Yes I know it sounds like I copied that from Alfa Romeo but I have no better name to call it... So please comment on the engine and maybe give me a name or two!

EDIT: Sorry the image didn't come through first time

Re: My sportscar engine

Posted:
Tue Jun 18, 2013 9:36 am
by V10I10ilove10cyl
I quite like it maybe a low end sports car.
Re: My sportscar engine

Posted:
Tue Jun 18, 2013 10:13 am
by Noxan9
how about "Carver V8"? or "Landerham 4.0" (slightly alteration of Caterham)
Re: My sportscar engine

Posted:
Tue Jun 18, 2013 3:34 pm
by USDMFTW
The torque curve makes no sense to me on how thats possible,lol.
Re: My sportscar engine

Posted:
Tue Jun 18, 2013 3:44 pm
by oppositelock
Not bad. Two things I'd change:
a) It looks like the horsepower curve is still ramping up when the rev limiter kicks in. This engine would no doubt make more power with a higher redline. Try a shorter stroke and/or better internals.
b) Move the two cam profiles closer together. Double hump torque curves with a dip in the middle is a personal pet peeve lol.
Re: My sportscar engine

Posted:
Tue Jun 18, 2013 10:20 pm
by 09webbad
Cheers for the comments! The Genia Carver it is then... the problem is that increasing the stroke and improving the RPM affects the MTBF and I am already using lightweight forged and forged i beam conrods :/ So is there any way to solve this problem??
Oh and increasing the cam profile reduces the economy, besides the sudden increase doesn't bother me much...
Re: My sportscar engine

Posted:
Tue Jun 18, 2013 10:43 pm
by Kubboz
You can try decreasing the stroke. You can also increase the bottom end quality.
Re: My sportscar engine

Posted:
Tue Jun 18, 2013 11:00 pm
by 09webbad
I could, but the the man-hours increse quite dramatically...
Re: My sportscar engine

Posted:
Tue Jun 18, 2013 11:10 pm
by Leximu
I like the engine but I question, why a v8 ? Just a personal preference ? I, when making a N/A sports car go for a light weight engine.... light as humanly possible and squeezing all the horses out of it I can..... I also use just regular unleaded, because if it makes X power at his much, then it'll make a lot more at this much.. My favorite engines are my I4's with 180 horses, being only 1.6L and lighter than crap their pretty robust.. lol
Re: My sportscar engine

Posted:
Wed Jun 19, 2013 3:16 am
by 09webbad
The fact it's a V8 is, because it is a smallish sports car and a 4.0L is too large per cylinder for an inline 4 and an inline 6 is very long, so is unlikely to fit in the engine bay. A V8 also has a nice rumbley sound compared to an V6... Then again, when V10s are released I'll have a go at making the stroke as low as possible compared to the V8 and see if it is any better

Re: My sportscar engine

Posted:
Wed Jun 19, 2013 3:23 am
by V10I10ilove10cyl
Strange torque curve though overall if you left a download link when I get this game I would download it add a few more bhp sort out the torque curve and use it in my one and only supercar model I have planned not refined enough for a luxury car.
Re: My sportscar engine

Posted:
Wed Jun 19, 2013 3:57 am
by 09webbad
The "strange" torque curve is the VVL kicking in giving both the benefit of maximum power and economy... that sudden change is when the camshaft switches to another. Select anything but a DOHC 5 valves per cylinder head and then select the VVL option... play around with the cam profile and the VVL profile and see the advantages for yourself...
Re: My sportscar engine

Posted:
Wed Jun 19, 2013 4:13 am
by V10I10ilove10cyl
Well now I know the strange torque curve.lol
Re: My sportscar engine

Posted:
Wed Jun 19, 2013 3:09 pm
by oppositelock
I put this together just as an example of how I'd do the same engine. I won't say it's "better", as it's better at some things and worse at others. Just food for thought.

Re: My sportscar engine

Posted:
Thu Jun 20, 2013 5:04 am
by 09webbad
Coming from the person who told me to shorten the stroke: your engine is almost 20kg heavier
