<![CDATA[Engine Design]]>Ok I didn't know for sure where to put this so move it if need be. For my senior project I have to do next year I chose to design and build my own engine. I was wondering what you guys think would be best for performance. Such as V design, straight, boxster style? Or overhead cam, or pushrod. and so on

]]>https://fargostreet.com/topic/2825/engine-designRSS for NodeThu, 28 May 2026 17:03:39 GMTFri, 27 May 2005 00:02:48 GMT60<![CDATA[Reply to Engine Design on Mon, 30 May 2005 08:19:58 GMT]]>www.nopistons.com

]]>https://fargostreet.com/post/49979https://fargostreet.com/post/49979Mon, 30 May 2005 08:19:58 GMT<![CDATA[Reply to Engine Design on Sun, 29 May 2005 18:07:39 GMT]]>rx7forums.com

]]>https://fargostreet.com/post/49880https://fargostreet.com/post/49880Sun, 29 May 2005 18:07:39 GMT<![CDATA[Reply to Engine Design on Sun, 29 May 2005 16:33:48 GMT]]>Wow theres a ton of options. I might just stick with a pretty simple inline 4. Maybe 4 valve dohc. The rotary would be awesome but I don't think I have the time or smarts to design it. Where could I find some blueprints or somethin so I could get some design help?

]]>https://fargostreet.com/post/49873https://fargostreet.com/post/49873Sun, 29 May 2005 16:33:48 GMT<![CDATA[Reply to Engine Design on Sun, 29 May 2005 01:24:16 GMT]]>sorry, 2650lb is shep's race weight.
why can't some good sleeving solve the problem? hasn't a b-series block been pushed to 700+hp? good aluminum block with some hefty sleeves and perhaps some reinforcing should have no problem with the kind of abuse that cast iron takes

]]>https://fargostreet.com/post/49825https://fargostreet.com/post/49825Sun, 29 May 2005 01:24:16 GMT<![CDATA[Reply to Engine Design on Sun, 29 May 2005 00:41:46 GMT]]>4G63's are iron blocks...and the blocks can take a shitload...

]]>https://fargostreet.com/post/49815https://fargostreet.com/post/49815Sun, 29 May 2005 00:41:46 GMT<![CDATA[Reply to Engine Design on Sun, 29 May 2005 00:32:30 GMT]]>

out there wrote:
4g63 makes massive hp, probably at least 1000, shep runs sub 9sec at 2650

????

Is 2650 supposed to be a hp number?

And I know the 4G is a good motor, but 1000hp isn't as reliable on that motor like it would be on others Granted, I've seen stock block Evos belt out over 500, but anything over 550 is pushing it.

I think the best way to say it, is that a stock cast iron block will take a LOOOOT more power, boost and abuse than a stock aluminum block ever will.

]]>https://fargostreet.com/post/49812https://fargostreet.com/post/49812Sun, 29 May 2005 00:32:30 GMT<![CDATA[Reply to Engine Design on Sun, 29 May 2005 00:29:14 GMT]]>

PSiedTSi wrote:
RB26+supra body=ultimate racer...

I normally dig Top Secret Japan, but that one just didn't do it for me.

I guess I'm too much of a purist, hahahahahaha!

]]>https://fargostreet.com/post/49811https://fargostreet.com/post/49811Sun, 29 May 2005 00:29:14 GMT<![CDATA[Reply to Engine Design on Sun, 29 May 2005 00:12:21 GMT]]>4g63 makes massive hp, probably at least 1000, shep runs sub 9sec at 2650

]]>https://fargostreet.com/post/49809https://fargostreet.com/post/49809Sun, 29 May 2005 00:12:21 GMT<![CDATA[Reply to Engine Design on Sun, 29 May 2005 00:01:39 GMT]]>RB26+supra body=ultimate racer...

]]>https://fargostreet.com/post/49808https://fargostreet.com/post/49808Sun, 29 May 2005 00:01:39 GMT<![CDATA[Reply to Engine Design on Sat, 28 May 2005 23:19:18 GMT]]>Just copy the designs of the Toyota 2JZ GTE. I may be a Nissan guy, but I won't hesitate to admit that the 2JZ is arguably the best motor designed in the 90s.

I don't know of any other engine that can make over 1000hp on a stock block.

]]>https://fargostreet.com/post/49807https://fargostreet.com/post/49807Sat, 28 May 2005 23:19:18 GMT<![CDATA[Reply to Engine Design on Sat, 28 May 2005 07:38:45 GMT]]>So the priorities are performance, then durability, with fuel economy being a secondary concern? I would go with a cast-iron sleeved aluminum block in either an inline-6 or V8 (maybe inline 8 if it could fit). For a car engine, a DOHC 4V/ cylinder setup would be nice, with variable valve timing a plus. Make it continously variable for bonus points. If you really wanted to get crazy, you could design an electrically operated head. If you actually wanted to build it, I would just use a late model Cobra head or a ported 2JZ (I don't know a whole lot of other options for an inline-6). Either way, get as much displacement as you can in your engine bay. (The DOHC V8 will be limited here.) I would keep it over-square (more bore than stroke), but that's just me. Try to keep the piston as short as you can, but remember that shorter pistons require tighter tolerances. For actual use, forged 4340 rods would be nice. Otherwise, or if you're infinitely rich, titanium. Incorporating a girdle into the design would be a big plus with the V8. Keep compression in about the 9-9.5 range. Multi-port fuel injection and a good tune would be good. Then, depending on your preference, use either a twin-screw blower or turbo with moderate boost, intercooled. Bam! All the power you could ever really use, in a fairly street-friendly package and still probably emissions legal and decent on the gas, depending on the cam and exhaust.

]]>https://fargostreet.com/post/49772https://fargostreet.com/post/49772Sat, 28 May 2005 07:38:45 GMT<![CDATA[Reply to Engine Design on Sat, 28 May 2005 05:31:05 GMT]]>Forced Induction Inline 6 all the way.

]]>https://fargostreet.com/post/49764https://fargostreet.com/post/49764Sat, 28 May 2005 05:31:05 GMT<![CDATA[Reply to Engine Design on Sat, 28 May 2005 05:30:45 GMT]]>4L straight 8? 90mm bore x 80mm stroke? should produce some mean tq and rev to the sky.
10:1 compression and keep it n/a; aluminum block with iron sleeves (don't screw up and use aluminum like honda did with the b20a5 and the b21)
if you're planning on potentially using this engine, i don't know how large it would be, but i can see it having some real potential. or... you could take the ideas that others have suggested and produce a rotary that will run on alcohol... except that would likely need at least 3 rotary chambers to make enough power considering the lack of energy in alcohol

]]>https://fargostreet.com/post/49763https://fargostreet.com/post/49763Sat, 28 May 2005 05:30:45 GMT<![CDATA[Reply to Engine Design on Fri, 27 May 2005 19:10:03 GMT]]>how about a 2L 90deg banked V8, and make it rpm screamer.

]]>https://fargostreet.com/post/49695https://fargostreet.com/post/49695Fri, 27 May 2005 19:10:03 GMT<![CDATA[Reply to Engine Design on Fri, 27 May 2005 13:11:15 GMT]]>

adog wrote:
What type of application is the engine going to be used with? Of emissions, economy, performance, and durability, which is most important?
I would probably say that performance and durability. The application could be my stang if the engine works out right, but for now its just for display for a huge project for graduation.

]]>https://fargostreet.com/post/49683https://fargostreet.com/post/49683Fri, 27 May 2005 13:11:15 GMT<![CDATA[Reply to Engine Design on Fri, 27 May 2005 05:39:08 GMT]]>

tjamz wrote:
all are good designs really...I'm sure the domestic guys will say V8, most of the import guys will say I4/I6, and us Subie guys will all say boxer.....most will probably agree w/ me about overhead>pushrod. If you want to build a pretty bad ass motor relatively cheap, get a block from a 90-94 Subaru Legacy Turbo (ej22t is the engine code.) Build the motor to rev to 8,500, stroke it to 2.4 or 2.5 liters and put a T67 on it. 8.5:1 compression, JUN valvetrain & cams on a WRX head that has been P&P'ed. Make sure you port the TB and remove the tumble generator valves, modify the stock injectors (cut the screens off, they will flow ~740cc).

when all is said and done, sell the motor to me.

do what he said!

]]>https://fargostreet.com/post/49665https://fargostreet.com/post/49665Fri, 27 May 2005 05:39:08 GMT<![CDATA[Reply to Engine Design on Fri, 27 May 2005 05:38:44 GMT]]>so you are actually designing and machining you own motor? make a HUGE 4 cylinder. like 3.5 or 4 liter.

]]>https://fargostreet.com/post/49664https://fargostreet.com/post/49664Fri, 27 May 2005 05:38:44 GMT<![CDATA[Reply to Engine Design on Fri, 27 May 2005 04:23:24 GMT]]>What type of application is the engine going to be used with? Of emissions, economy, performance, and durability, which is most important?

]]>https://fargostreet.com/post/49645https://fargostreet.com/post/49645Fri, 27 May 2005 04:23:24 GMT<![CDATA[Reply to Engine Design on Fri, 27 May 2005 04:04:55 GMT]]>c'mon.. 4g63!

no really.. i like the rotary idea.

]]>https://fargostreet.com/post/49643https://fargostreet.com/post/49643Fri, 27 May 2005 04:04:55 GMT<![CDATA[Reply to Engine Design on Fri, 27 May 2005 03:22:07 GMT]]>^yea...make it a four rotor monster

]]>https://fargostreet.com/post/49638https://fargostreet.com/post/49638Fri, 27 May 2005 03:22:07 GMT<![CDATA[Reply to Engine Design on Fri, 27 May 2005 03:19:12 GMT]]>I vote for a forced induction rotary that will run on ethanol. Rotaries have one of if not the best power to weight ratio for engine designs. If you want more torque/hp just add more rotors :). Turbocharged and burnin' moonshine, sounds delicious.

]]>https://fargostreet.com/post/49637https://fargostreet.com/post/49637Fri, 27 May 2005 03:19:12 GMT<![CDATA[Reply to Engine Design on Fri, 27 May 2005 02:16:49 GMT]]>

92BlackTT wrote:
Forced induction. Design a new rotory that will last 250,000 miles.

That makes low end torque, uses far less fuel, and is emissions friendly.

]]>https://fargostreet.com/post/49633https://fargostreet.com/post/49633Fri, 27 May 2005 02:16:49 GMT<![CDATA[Reply to Engine Design on Fri, 27 May 2005 01:39:00 GMT]]>Forced induction. Design a new rotory that will last 250,000 miles.

]]>https://fargostreet.com/post/49628https://fargostreet.com/post/49628Fri, 27 May 2005 01:39:00 GMT<![CDATA[Reply to Engine Design on Fri, 27 May 2005 01:35:33 GMT]]>Ok sorry I didn't make this fully clear. I'm not buying an engine to mod. I am starting with a blank CAD design. Oh heres another question forced or NA?

]]>https://fargostreet.com/post/49627https://fargostreet.com/post/49627Fri, 27 May 2005 01:35:33 GMT