My HSR modification
Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,150
Likes: 304
From: Timra, Sweden
My HSR modification
(click to enlarge pictures)
8 cm from manifold base to hood
Plenum is 10 cm.
Some grinding ...
Like this it just might clear the hood. I will lower the plenum a bit more just to be sure.
8 cm from manifold base to hood
Plenum is 10 cm.
Some grinding ...
Like this it just might clear the hood. I will lower the plenum a bit more just to be sure.
Last edited by JoBy; Oct 4, 2005 at 07:06 PM.
Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,150
Likes: 304
From: Timra, Sweden
Originally Posted by 1990dtgL98squared
So what exactly did you do? Cut out the bottom of the plenum and slid it over the base? How hard was it?
I was thinking about going this route.
I was thinking about going this route.
Grinding ... testing ... grinding ... testing ...
Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,150
Likes: 304
From: Timra, Sweden
Originally Posted by Ramanstud
how you going to secure it, and how you going to seal it?
Team Owner
Joined: Jun 2002
Posts: 21,510
Likes: 0
From: On a Wisconsin Death Trip
Are you going to machine the runners flush with the plenum?
I've always wondered if just machining down the runners would allow enough room to clear the hood. I suppose you could even get them machined at an angle.
I've always wondered if just machining down the runners would allow enough room to clear the hood. I suppose you could even get them machined at an angle.
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Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,150
Likes: 304
From: Timra, Sweden
Originally Posted by Dynabob
Jonas, are you going to use the Vortech on this set-up? I am very jealous of your fabricating skills!! Good work! 
I have not decided if I am keeping the Vortech next summer or convert to turbo instead. Running without boost is not an option.
Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,150
Likes: 304
From: Timra, Sweden
Originally Posted by loiq
Are you going to machine the runners flush with the plenum?
I've always wondered if just machining down the runners would allow enough room to clear the hood. I suppose you could even get them machined at an angle.
I've always wondered if just machining down the runners would allow enough room to clear the hood. I suppose you could even get them machined at an angle.
I will keep the runner length but I will radius the openings. Having the runners go into the plenum will actually increase the flow a bit.
It is bset to have small 'trumpets' in the plenum.
Safety Car
Joined: Dec 2004
Posts: 4,088
Likes: 0
From: Poop land
Wow, so finally a mod to help fit the HSRI under the stock hood of a C4. So you took off 3 cm of material from that base? Would you also have to retap the plenum bolt holes? I love your ingenuity! If I only had more time on my hands, but I have no grinding tools at the house, except for an old dremel.
Drifting
Joined: Feb 2004
Posts: 1,277
Likes: 1
From: Santa Maria CA
hey Jonas, i think you should sell me your Vortec setup for the crossfire you made so you can TT the HSR! doens't that sound like a plan! if not then there will be no more supercharged crossfire running around anymore..... 
Mike
Mike
Le Mans Master
Joined: Jan 2002
Posts: 9,036
Likes: 13
From: Edmonton AB
Your teachers recall you as 'That Problem Child', don't they.
Nice tactic for finessing the HSR/C4 problem. Removal of
the bolt columns should more than make up for the plenum
volume lost to intrusion of the runnners. I never liked the
sharp edge of the runners either, now you can radius and
blend them or add mini velocity stacks. I can't think of a
operational reason for a 2-pc intake, it just facilitates mfrg
for the HSR.
Hope nothing rises up to stop you.
.
Nice tactic for finessing the HSR/C4 problem. Removal of
the bolt columns should more than make up for the plenum
volume lost to intrusion of the runnners. I never liked the
sharp edge of the runners either, now you can radius and
blend them or add mini velocity stacks. I can't think of a
operational reason for a 2-pc intake, it just facilitates mfrg
for the HSR.
Hope nothing rises up to stop you.
.
Le Mans Master
Joined: Jul 2001
Posts: 8,183
Likes: 3
From: Santa Maria, CA
Originally Posted by Slalom4me
... I never liked the
sharp edge of the runners either, now you can radius and
blend them...
sharp edge of the runners either, now you can radius and
blend them...
(please nobody ask about that black box sitting on top there
) 
Jonas, good work my friend! Show us the welds when you finish.
Should look like a row of coins. And show us the radius edges too. Should flow nice. Any plans to flowbench your finished product?
Last edited by pablocruise; Oct 5, 2005 at 04:20 PM.
Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,150
Likes: 304
From: Timra, Sweden
Originally Posted by k0rv3tt389
Wow, so finally a mod to help fit the HSRI under the stock hood of a C4. So you took off 3 cm of material from that base? Would you also have to retap the plenum bolt holes? I love your ingenuity! If I only had more time on my hands, but I have no grinding tools at the house, except for an old dremel.
Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,150
Likes: 304
From: Timra, Sweden
Originally Posted by SHINOBI-X
hey Jonas, i think you should sell me your Vortec setup for the crossfire you made so you can TT the HSR! doens't that sound like a plan! if not then there will be no more supercharged crossfire running around anymore.....
Mike
Mike
Thread Starter
Melting Slicks
Joined: Mar 2001
Posts: 2,150
Likes: 304
From: Timra, Sweden
Originally Posted by 89 Paul in Cal
Show us the welds when you finish.
Should look like a row of coins. And show us the radius edges too. Should flow nice. Any plans to flowbench your finished product?
Should look like a row of coins. And show us the radius edges too. Should flow nice. Any plans to flowbench your finished product?
