Author Message

<  Performance  ~  280 Rear wheel horsepower on a low budget

PostPosted: Sun Apr 29, 2012 7:25 pm
VerdeVerdeJoined: Mon Nov 29, 2004 7:06 pmPosts: 1552
http://www.youtube.com/watch?v=epzfOY6t_WI

This guy bought my book, and built a budget supercharged engine. It has held up at at least two track events. It's using an Eaton supercharger from a Mercedes. It's mounted on the right side of the car and blows through an air to air intercooler into a reversed stock intake plenum.

The shocking part here, is that he lowered the compression by putting a 2.5 crank into a 3.0 engine. This is very unconventional, but somewhat surprisingly, it worked out well. 280hp at the wheels on stock components is pretty impressive.

Greg,
www.hiperformancestore.com
www.okinjectors.com


Offline Profile
PostPosted: Sun Apr 29, 2012 10:23 pm
User avatarSite AdminSite AdminJoined: Sun Nov 21, 2004 12:00 pmPosts: 476Location: Seattle, WA, USA
Nice - that looks like TunerStudio - do you know if he is running Megasquirt?



_________________
Michael
1985 GTV6
Offline Profile
PostPosted: Sun Apr 29, 2012 10:59 pm
VerdeVerdeJoined: Mon Nov 29, 2004 7:06 pmPosts: 1552
I am 99% sure it's Megasquirt.

Greg


Offline Profile
PostPosted: Mon Apr 30, 2012 3:07 am
User avatarVerdeVerdeJoined: Sun May 08, 2005 11:56 pmPosts: 756Location: Netherlands
Using the 2.5 crank in a 3.0 has been done before.. :wink:

Stephan from Squadra did it a few years ago already on a 916 3.0 Spider. The 2.8 engine delivers an easy 330 bhp and 400Nm+.

dutch link. :wink:

And the SA 155 24v TT used this approach on a 24v 3.0. :D

One guy i spoke to was worried about the squish in the 12v heads but i can't see very much squish-area in the original design so i guess it's not too bad. :)



_________________
Drive it like you stole it...
Offline Profile
PostPosted: Mon Apr 30, 2012 3:17 am
GoldGoldJoined: Tue May 12, 2009 12:02 pmPosts: 195
nice! What killed the engine? High revs?


Offline Profile
PostPosted: Mon Apr 30, 2012 3:24 am
User avatarVerdeVerdeJoined: Sun May 08, 2005 11:56 pmPosts: 756Location: Netherlands
Engines i talked about are still in service... :?

Also no need to rev them hard since their turbo'ed. plenty of grunt from down low. 8)



_________________
Drive it like you stole it...
Offline Profile
PostPosted: Mon Apr 30, 2012 5:26 pm
User avatarSite AdminSite AdminJoined: Sun Nov 28, 2004 8:20 pmPosts: 1659Location: Cameroon
This is Han's car? I like to see the video of this SC car going against Niclas Rosengren's super modified 3.0 12V (232 whp). Super awesome!



_________________
Dr. Alban
Offline Profile
PostPosted: Mon Apr 30, 2012 8:24 pm
VerdeVerdeJoined: Mon Nov 29, 2004 7:06 pmPosts: 1552
I would like to see that to, although I know the SC/car easily takes the hp/dollar contest, which is my point.

Greg


Offline Profile
PostPosted: Tue May 01, 2012 11:27 pm
User avatarVerdeVerdeJoined: Mon Nov 29, 2004 12:26 amPosts: 4059Location: Gothenburg, Sweden
Zamani wrote:
This is Han's car? I like to see the video of this SC car going against Niclas Rosengren's super modified 3.0 12V (232 whp). Super awesome!


It sure looks like Hans talking to the operator... Can't say I Recognize the car though, the Trollspeed sticker on the fender is interesting though, they make a lot of 700+ Hp RallyCross engines and the They were the ones who made the Pikes Peak engine for Per Eklund. Huge track record.



_________________
Mats Strandberg
-Scuderia Rosso- Now burned to the ground...
-onemanracing.com-
-Strandberg.photography-

GTV 2000 -77 - Died in the fire.
155 V6 Sport -96 - Sold!
Offline Profile
PostPosted: Wed May 02, 2012 12:53 am
User avatarVerdeVerdeJoined: Tue Oct 11, 2005 8:56 amPosts: 774

Offline Profile
PostPosted: Wed May 02, 2012 1:05 am
User avatarVerdeVerdeJoined: Tue Oct 11, 2005 8:56 amPosts: 774
75s vs. 348s

I think I've posted this before

http://www.youtube.com/watch?v=sP0OiWoffeI


Offline Profile
PostPosted: Wed May 02, 2012 8:44 am
VerdeVerdeJoined: Mon Nov 29, 2004 7:06 pmPosts: 1552
Yup, that's the car.

Greg


Offline Profile
PostPosted: Wed May 02, 2012 3:31 pm
PlatinumPlatinumJoined: Tue Feb 21, 2006 10:05 pmPosts: 494Location: Sunny Euro-Brisney
Very nice.
I've often wondered about the 2.5 crank to drop CR - infact i even posed a question on another (non brand specific) forum asking about the outcomes of low boost, 9.5:1 3l vs higher boost, 8:1 2.8l.

One of these days I'll do something neat.



_________________
1966 GTV
1982 Suzuki "Bathurst" Katana
1995 Cagiva Mito (race kitted 250 powered)
Offline Profile
PostPosted: Wed May 02, 2012 3:54 pm
User avatarVerdeVerdeJoined: Tue Oct 11, 2005 8:56 amPosts: 774
Greg,

Wasn't Hans' car a high compression 3.0 with forged pistons, but it didn't quite work out for him so he just put in a 2.5 crank to drop the CR?


Ben,

Isn't the days of the 8 or 7 CR days over? These days we're seeing superchagred S2000 with stock internals beating 360s.

I think with Greg's setup, good ecu, and good cooling a stock 3.0 12V with 9.5:1 can be in the E46 M3 territory, if the ring and pinion allows it.

For a road car, I think hi comp and low boost is the way to go.


Offline Profile
PostPosted: Wed May 02, 2012 4:59 pm
VerdeVerdeJoined: Mon Nov 29, 2004 7:06 pmPosts: 1552
I don't remember Han's car having high compression. I think he built it this way.

I discuss the high compression low boost vs low compression high boost issue in my book. The short version is lower compression with more boost and timing is better for power. Doing it the other way around is better for everything else.

There is not much advantage on the Alfa V6 in going below about 8.5:1, at that point you can put in 20psi, enough to break everything. Plus supercharger efficiency starts to drop off pretty fast when you go much higher.


Greg


Offline Profile

Display posts from previous:  Sort by:

All times are UTC - 8 hours
Page 1 of 2
20 posts Go to page 1, 2  Next
Users browsing this forum: No registered users and 1 guest
Search for:
Post new topic  Reply to topic
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