motorgeek.com :: Socially inappropriate motoring information.
Search this topic:
motorgeek.com :: Board index :: The Tech Lounge :: General
Post new topic Reply to topic  [ 38 posts ] Go to page 1, 2  Next

Lightest V8 motor for a road car?

Author Message
 Post subject: Lightest V8 motor for a road car?
PostPosted: Thu Jul 08, 2010 11:04 pm 
Offline
I sprinkle rubber on my Cherios
User avatar

Joined: Wed Apr 05, 2006 11:41 am
Posts: 307
What do you guys think it would be? Would it matter to a point, as well?

I'm bored, and I also own a Miata, and I've been tossing around ideas for doing a swap... I collected a ton of info on the really common ones, including SBF and LSx motor swaps which are very abundant, but sbf motors are over 500lbs, and the LS1 fully decked out is 481 give or take 20. The Audi V8 is availiable as light as 375lbs without A/c for a belt driven 40v version (not sure on the chain drive motor) so that might be it. Also thinking of bmw or merc motors, and the Hartley V8 is so out.

There is a point where you wonder, is 100lbs out of the motor worth it, when you can strip 100 out of the car, or add more power? I think it is, since 100lbs is 100lbs more than you could otherwise strip out, and for all the added power the LS1 will give you it won't take away weight to help the handling.. I'm thinking if the Audi V8 could put out 360 or so that would suffice anyway.


Any extra thoughts? I've gotten on this plug of engine weights recently, and I made a small spreadsheet. The Hyabusa motor is supposed to weight about 135lbs... there's an interesting thought, but someone else already is doing that shit here...

Also, the BP 1.8l motor that is in a stock 94+ Miata is about 430lbs with manifolds, no turbo... mine has a turbo, so a bit more. Supposedly an LS1 or etc conversion brings the weight up about 200-400lbs.

_________________
2005 Mazda-speed Miata - 3071, Hydra nemesis, FM parts, mostly stock...and slow.
1991 VW Passat - Murder!
1991 Audi V8 Blackened, served over sadness with a side of irony.
1991 Oldsmobile Bravada - Jacked by Mexican drug runners!


Top
 Profile  
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Thu Jul 08, 2010 11:47 pm 
Offline
kickin' tires'n lightin fires
User avatar

Joined: Mon Nov 16, 2009 4:23 pm
Posts: 589
http://www.h1v8.com

_________________
many euro cars, bikes and some 'murican stuff 2
parting: 1995.5 s6. 86 4kcsq. 1990 cq. several type 44 sedans


Top
 Profile  
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Fri Jul 09, 2010 6:15 am 
Offline
kickin' tires'n lightin fires
User avatar

Joined: Fri Sep 15, 2006 12:10 pm
Posts: 929
Location: Mount Laurel, NJ
^^^^ What he said; granted it also comes with a $$$$ cost..

_________________
Scott

4 V8's; All gone :-(


Top
 Profile  
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Fri Jul 09, 2010 6:48 am 
Offline
mach 2 with my hair on fire
User avatar

Joined: Wed Nov 17, 2004 6:16 am
Posts: 2869
Location: TEX-ASS USA
Although rather small the 215 Buikc V8 probably takes the win as the lightest V8 automotive engine (around 300lbs). You can also look into the Range rover engines as they are based off of that engine so weights and dims should be the same.

The northstar is a big heavy pig as is the Porsche 928 mill. If you wanted to get really crafty you could mate 2 hyabusa engines at the crankshaft and make a hyabusa V8.. Hmmm...

_________________
The Scottmeister

"With great power comes horrible fuel economy"
www.advancedautomotion.com


Top
 Profile  
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Fri Jul 09, 2010 5:24 pm 
Offline
kickin' tires'n lightin fires
User avatar

Joined: Mon Nov 16, 2009 4:23 pm
Posts: 589
scottmandu wrote:

If you wanted to get really crafty you could mate 2 hyabusa engines at the crankshaft and make a hyabusa V8.. Hmmm...



that is exactly what a hartley v8 is

_________________
many euro cars, bikes and some 'murican stuff 2
parting: 1995.5 s6. 86 4kcsq. 1990 cq. several type 44 sedans


Top
 Profile  
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Fri Jul 09, 2010 6:14 pm 
Offline
I post, therefore I am
User avatar

Joined: Sat Nov 13, 2004 4:36 pm
Posts: 6142
Location: Thornton, Co
The start of a list Showing the Buick/Rover as 315#.

_________________
Ed Hankin *All posts subject to inaccuracy due to multi-tasking and iPhone.
Image
If you own a 1990 or 1991 Audi Coupe Quattro and live in North America please add it to the registry!


Top
 Profile Facebook 
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Fri Jul 09, 2010 6:21 pm 
Offline
mach 2 with my hair on fire
User avatar

Joined: Wed Nov 17, 2004 6:16 am
Posts: 2869
Location: TEX-ASS USA
secretagentman wrote:
scottmandu wrote:

If you wanted to get really crafty you could mate 2 hyabusa engines at the crankshaft and make a hyabusa V8.. Hmmm...



that is exactly what a hartley v8 is


sorry I idn't click the hartley link.

_________________
The Scottmeister

"With great power comes horrible fuel economy"
www.advancedautomotion.com


Top
 Profile  
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Fri Jul 09, 2010 6:25 pm 
Offline
Redline?
User avatar

Joined: Thu Mar 25, 2010 5:13 pm
Posts: 116
Location: Canada
buick/rover aluminium block setup is probably going to be the cheapest, and fairly light. Not sure though.


Top
 Profile  
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Sat Jul 10, 2010 10:04 am 
Offline
I post, therefore I am
User avatar

Joined: Wed Apr 27, 2005 9:23 am
Posts: 4878
Location: Meriden, CT
LSx is probably the lightest and cheapest/cheapest to mod.

_________________
XLR8
Image
2003 540i/6 M-Tech #1090/1265 Spring/Summer/Fall
2001 330Cic/A Fiance-mobile
1991 200 20v Winter/Utility


Top
 Profile  
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Sat Jul 10, 2010 11:04 am 
Offline
kickin' tires'n lightin fires

Joined: Mon Aug 31, 2009 2:22 pm
Posts: 736
Location: NH
anyone have number's on the new aluminum block 5.o Ford for the 2011Mustang? Not likely to be a cost effective option... just curious.

_________________
Happy Trails!!!


Top
 Profile  
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Sat Jul 10, 2010 11:06 am 
Offline
I post, therefore I am
User avatar

Joined: Sat Nov 13, 2004 4:36 pm
Posts: 6142
Location: Thornton, Co
Justin517 wrote:
LSx is probably the lightest and cheapest/cheapest to mod.

It is heaver than a LS1/2/3; just the, cast iron, block is 215#s.

_________________
Ed Hankin *All posts subject to inaccuracy due to multi-tasking and iPhone.
Image
If you own a 1990 or 1991 Audi Coupe Quattro and live in North America please add it to the registry!


Top
 Profile Facebook 
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Sat Jul 10, 2010 4:19 pm 
Offline
mach 2 with my hair on fire
User avatar

Joined: Fri Jul 22, 2005 6:57 pm
Posts: 1416
Location: central MA
forget a V8, try something different; VR6

_________________
evan nelson
-Buell XB9SX


Top
 Profile  
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Sat Jul 10, 2010 7:14 pm 
Offline
I post, therefore I am
User avatar

Joined: Sat Nov 13, 2004 4:36 pm
Posts: 6142
Location: Thornton, Co
VR5!

_________________
Ed Hankin *All posts subject to inaccuracy due to multi-tasking and iPhone.
Image
If you own a 1990 or 1991 Audi Coupe Quattro and live in North America please add it to the registry!


Top
 Profile Facebook 
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Sat Jul 10, 2010 7:27 pm 
Offline
mach 2 with my hair on fire
User avatar

Joined: Fri Jul 22, 2005 6:57 pm
Posts: 1416
Location: central MA
Now we're talking!

_________________
evan nelson
-Buell XB9SX


Top
 Profile  
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Sat Jul 10, 2010 9:00 pm 
Offline
mach 2 with my hair on fire

Joined: Mon Nov 10, 2008 4:23 pm
Posts: 1272
Well my vote goes to the LSx. It's a well documented swap, and the engine has pretty much had everything possible done to it, has a huge aftermarket, and can make mad power relatively easy. Though an I5 swap would be sweet.

_________________
--Josh--
'89 200QT - RIP
--------------------

Image


Top
 Profile  
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Sat Jul 10, 2010 9:26 pm 
Offline
I post, therefore I am
User avatar

Joined: Mon Jun 07, 2004 9:14 pm
Posts: 5940
Location: Columbus, Ohio
I would at least consider a BMW engine. I would not want to venture into adapter plate territory, which would be required by an Audi V8. BMW has produced some powerful and reasonably light engines in the past few years. BMW I6s are fairly short, all things considered. Would an I6 be possible in a Miata?

_________________
"Like" Quantum Mechanics Performance and Fabrication on Facebook for Audi Fox Quattro updates and other project developments.

https://www.facebook.com/VWQuantumMechanics


Top
 Profile  
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Sat Jul 10, 2010 9:42 pm 
Offline
I post, therefore I am
User avatar

Joined: Sat Nov 13, 2004 4:36 pm
Posts: 6142
Location: Thornton, Co
http://www.motoiq.com/magazine_articles ... is-in.aspx

_________________
Ed Hankin *All posts subject to inaccuracy due to multi-tasking and iPhone.
Image
If you own a 1990 or 1991 Audi Coupe Quattro and live in North America please add it to the registry!


Top
 Profile Facebook 
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Sat Jul 10, 2010 10:32 pm 
Offline
I post, therefore I am
User avatar

Joined: Sun Apr 13, 2008 9:27 pm
Posts: 9667
Location: Jupiter/Gainesville, Fl
pitts wrote:
anyone have number's on the new aluminum block 5.o Ford for the 2011Mustang? Not likely to be a cost effective option... just curious.



I like the way you think. That engine is a work of art from what I've seen. Almost on the level of the exotic European V8s like the RS4 and the M3.

_________________
-Chris
'91 200 20vtq BIG turbo/de-stroke/revver project
'01 ///M5
'94 530i (baby V8) daily beater... maybe rear-mount turbo soon ;)

Image


Top
 Profile Facebook 
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Sat Jul 10, 2010 11:18 pm 
Offline
I post, therefore I am
User avatar

Joined: Sat Nov 13, 2004 4:36 pm
Posts: 6142
Location: Thornton, Co
loxxrider wrote:
pitts wrote:
anyone have number's on the new aluminum block 5.o Ford for the 2011Mustang? Not likely to be a cost effective option... just curious.



I like the way you think. That engine is a work of art from what I've seen. Almost on the level of the exotic European V8s like the RS4 and the M3.

Isn't it WIDE?

_________________
Ed Hankin *All posts subject to inaccuracy due to multi-tasking and iPhone.
Image
If you own a 1990 or 1991 Audi Coupe Quattro and live in North America please add it to the registry!


Top
 Profile Facebook 
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Sat Jul 10, 2010 11:55 pm 
Offline
kickin' tires'n lightin fires

Joined: Mon Aug 31, 2009 2:22 pm
Posts: 736
Location: NH
oh probably, but the original poster didn't say anything about physical dimensions... on never mind... Miata right... dunno probably do large.

I know the new Shelby 500 5.4 blocks are aluminum and they are using some sort-of treatment/coating on the cylinder walls instead of the more traditional cast iron sleeves (presumably the same process on the new 5.0 ??)... Yup... pretty trendy, coated aluminum cylinder walls and variable cam timing... all the modern tricks... and in a Ford... its been long wait for sure.

_________________
Happy Trails!!!


Top
 Profile  
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Sun Jul 11, 2010 1:08 am 
Offline
I post, therefore I am
User avatar

Joined: Sun Apr 13, 2008 9:27 pm
Posts: 9667
Location: Jupiter/Gainesville, Fl
new 5.0 has steel sleeves

_________________
-Chris
'91 200 20vtq BIG turbo/de-stroke/revver project
'01 ///M5
'94 530i (baby V8) daily beater... maybe rear-mount turbo soon ;)

Image


Top
 Profile Facebook 
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Sun Jul 11, 2010 2:32 am 
Offline
I post, therefore I am
User avatar

Joined: Thu Feb 10, 2005 8:45 am
Posts: 4146
Location: Norton Shores, Mi. My cat has human-like reflexes
Few random thoughts: rover w/turbo (maybe turbo in back of car if you have to) buick 3.8 v6t, or just rods and big turbo for the stock 1.8

_________________
7a head/milled mc2 bottom w/holset Hx35...500hp for $500?
viewtopic.php?t=6726


Top
 Profile  
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Sun Jul 11, 2010 7:22 am 
Offline
kickin' tires'n lightin fires
User avatar

Joined: Fri Oct 06, 2006 11:20 am
Posts: 840
Location: Lexington, KY
For a Miata I would consider a 13b rotary engine. Light, documented installations, good power, takes weight off the front of the engine, plenty of room to work on it in the engine bay. Add a turbo & a big intercooler & call it a day.

_________________
"Nulla tenaci invia est via"
1990 20v coupes (2 X red)
95.5 UrS6
2002 S4 parting out.
1996 Cabriolet.


Top
 Profile  
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Sun Jul 11, 2010 8:27 am 
Offline
kickin' tires'n lightin fires

Joined: Mon Aug 31, 2009 2:22 pm
Posts: 736
Location: NH
isn't there a KIA motor they stuff in those? (a v6 if I remember) KIA uses it in their SUV and its actually a Nissan engine?


@Lox good to know about the 5.0

_________________
Happy Trails!!!


Top
 Profile  
Reply with quote  
 Post subject: Re: Lightest V8 motor for a road car?
PostPosted: Mon Jul 12, 2010 8:41 am 
Offline
mach 2 with my hair on fire
User avatar

Joined: Sun Jun 14, 2009 9:28 am
Posts: 1976
Location: Bangkok, Thailand
secretagentman wrote:
http://www.h1v8.com


That engine just kicks ass! And for a measly 1200 bucks extra it goes to 3.0L.

Just add 2 turbos and hey presto: 2x 499hp: http://www.youtube.com/watch?v=jwieel03c-w

Or this one. Just sick: A BMW m20 3L: http://www.youtube.com/watch?v=J0gKX2J- ... L&index=17

_________________
96 Audi S6 20vt sedan auto, PRJ chipped.
95 Audi 80 converted to Quattro + AEB.


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 38 posts ] Go to page 1, 2  Next
Search this topic:
motorgeek.com :: Board index :: The Tech Lounge :: General

Jump to:  



Information

Users browsing this forum: Apriliapilot and 2 guests



You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum
  |  It is currently Fri Oct 24, 2014 11:00 am
Share |