304 Intake Manifold Swap - CommodoresPlus

This topic contains 160 replies, has 10 voices, and was last updated by Immortality 8 years, 2 months ago.

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July 16, 2016 at 7:04 pm #18490
doz10
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he’s still the king of minis, that’s how I know of him
July 18, 2016 at 10:23 am #18527
VRSenator065
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I actually have a book he did way back when on nitrous injection. Must have been not long after he was in the staes as it was with US V8s. Must get that out and have another read
July 18, 2016 at 1:19 pm #18537
Immortality
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Even now Vizard the Wizard is still at the forefront of engine development.

Many moons ago I worked with an engineer who built and raced Mini’s using Vizards know how, he won his class (classics) each year and almost won outright against the open class cars. The man has beat many a V8 around the Pukekohe race track.
July 18, 2016 at 3:58 pm #18538
VRSenator065
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Sounds like you have done some cool stuff mate. What was it back in the day, LCB exhaust and a 2084 head or something were the go?
July 18, 2016 at 4:24 pm #18539
cava454
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Vizard is up their with Smokey Yunkic also?
July 18, 2016 at 8:34 pm #18547
VRSenator065
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Vizard is like a the thinking mans Smoky Yunick
July 21, 2016 at 1:31 pm #18629
Immortality
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Well the manifold is at Marsh Motorsport to have the injector boss’s drilled to suit, should have it back early next week hopefully.

Also have a black billet thermostat housing on its way.

Unfortunately the missus just had a puncture that has stuffed an almost brand new treat and it’s costing $265 to replace so that has eaten the HPC coatings budget

VRSenator065 wrote:

Vizard is like a the thinking mans Smoky Yunick

Yeah, fairly much.
- This reply was modified 8 years, 5 months ago by Immortality.
July 27, 2016 at 5:38 pm #18728
Immortality
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Got my manifold back today from the machinist

Went to go and get my 1000cfm throttle body only to find out my local supplier is out of stock and there is a 6-8 week wait for new stock Waiting to hear back if we can get one in a little quicker.

Sometime this week at work I will machine up a couple of support bars for the fuel rails so that they can be fixed in place, once that is done I’ll have to dummy up for the TB height and then work out if I need a drop base filter or not.

Gave the Senator some love and cleaned up the intake faces on the heads etc, just need to run a tap through all the threads and it’ll be ready to have the manifold bolted down.

Picked up some new shiny bolts from my local engineering shop too
- This reply was modified 8 years, 5 months ago by Immortality.
- This reply was modified 8 years, 5 months ago by Immortality. Reason: add
- This reply was modified 8 years, 5 months ago by Immortality.
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July 27, 2016 at 6:04 pm #18733
VRSenator065
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Only thing i will say (and have always thought) is Holden really used the ugly stick big time when they designed the fuel rails on these!
July 27, 2016 at 6:10 pm #18735
Immortality
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Yeah but they did the job and didn’t look to bad on the banana’s manifold as they were fairly much hidden under covers…..

Some time in the future I may upgrade to a short body injector, grab some billet fuel rails and tidy it all up but for now I’ll just clean up these rails and a bit of a polish should have it looking 100% better.
- This reply was modified 8 years, 5 months ago by Immortality.
July 27, 2016 at 6:44 pm #18737
VRSenator065
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Yea sorry wasnt meaning to bag yours!
July 27, 2016 at 6:55 pm #18738
Immortality
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All good, it’s bloody filthy……

I think that it was definitely function over form when these were designed. From what I have seen these flow well enough unfortunately with this style of intake they do stand out like dogs bollocks.
July 27, 2016 at 8:16 pm #18740
cava454
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Polish those rails and do a -8 cross over. Will make them look magic.
August 3, 2016 at 9:21 am #18846
Immortality
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I stripped the fuel rails and will take em to work tonight to clean/polish if/when time allows.

Does anybody know what size fittings to use to do a -8 cross over? figure I can tap the ends of the fuel rails to suit what ever is required.

Thanks
August 3, 2016 at 11:41 am #18847
Hoopstar
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Any fittings will need to be welded on as there’s not enough material in the fuel rail to tap.

By the time you’ve bought the fittings and had the rails modified, it’d be cheaper to use something like this:

http://tinyurl.com/glgvwwv

$160 – cheap and cheerful but quality unknown..

or

http://tinyurl.com/j7k4sv6

$180 – Chinese made but better quality and used by lots of guys.
August 3, 2016 at 12:15 pm #18848
cava454
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Hoopstar wrote:

Any fittings will need to be welded on as there’s not enough material in the fuel rail to tap. By the time you’ve bought the fittings and had the rails modified, it’d be cheaper to use something like this: http://tinyurl.com/glgvwwv $160 – cheap and cheerful but quality unknown.. or http://tinyurl.com/j7k4sv6 $180 – Chinese made but better quality and used by lots of guys.

You can tap the rails. Mate of mine used to do it. Pretty sure he could do up to -10
August 3, 2016 at 12:19 pm #18849
Immortality
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I was considering those Aeroflow billet fuel rails.

There does seem to be plenty of meat in the rails, just depends on the size of the fittings going into it I guess (that’s why I was asking what most folks are using?).

It would seem (looking at those billet rails) that you would also need to modify the fuel lines/FPR to suit?
- This reply was modified 8 years, 4 months ago by Immortality. Reason: add
August 3, 2016 at 3:23 pm #18852
exec24
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cava454 wrote:

Polish those rails and do a -8 cross over. Will make them look magic.

Just how mine are done

Actually mine are -6
- This reply was modified 8 years, 4 months ago by exec24.
August 3, 2016 at 4:29 pm #18855
cava454
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Immortality wrote:

I was considering those Aeroflow billet fuel rails. There does seem to be plenty of meat in the rails, just depends on the size of the fittings going into it I guess (that’s why I was asking what most folks are using?). It would seem (looking at those billet rails) that you would also need to modify the fuel lines/FPR to suit?

When I looked into rails it wasn’t worth the piss farting around to do the reg. i went stock rails with welded Bungs (before all this slip in stuff), I used stock reg so it mounted easily, then got Blake from SC to polish them. He actually did a write up for them in the mag haha

Some companies even make a slip in adapter that slides in like the factory metal hose, if tapping or welding a Bung on isn’t your thing
August 3, 2016 at 4:53 pm #18857
VRSenator065
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^wonder if Blake ever finished that VN? weapon he was building, that was mental…
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