JeffJeffers
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| posted on 5/11/10 at 11:48 AM |
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Spencer Ashley Plenum
I recived a plenum that I ordered from Spencer Ashley.
 
manifold
When I bought it he did say it needed a little finishing off so gave me a few quid off. But I noticed last night that none of the tubes inside the
chamber have been cut flush is that right?
 
inside manifold
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tomgregory2000
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| posted on 5/11/10 at 11:51 AM |
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tomgregory2000
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| posted on 5/11/10 at 11:53 AM |
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that is sh1t, send it back, you might make 7bhp if your lucky using that
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mattyc
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| posted on 5/11/10 at 12:01 PM |
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I have first year Apprentice's that would and make a better job of that. I would send that back and ask for my money back.
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MikeR
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| posted on 5/11/10 at 12:07 PM |
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this is why i'm thinking of making my own version and selling them...... just need to get dxf's for the crossflow and zetec inlet
manifolds.
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mattyc
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| posted on 5/11/10 at 12:18 PM |
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I was just thinking the same thing but I have read some where that the is a science for gaining the maxium BHP from the inlet. If anybody has the
measurements for something like this please u2u me.
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will121
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| posted on 5/11/10 at 12:40 PM |
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that is shockingly bad (like my spelling) that and the griffin type inlets manifold should be easy to fabricate to a decent standard and with a bit of
engineering thought even by fabricating the outer tube in two parts to enable some form of inlet runner incorperating a trumpet, i fabricated mine
with a fiberglass plenum. as for inlet design think main areas are length for peak rev's trumpet for flow, getting to deep to look at pulse
tuning and think that would be OTT
[Edited on 5/11/10 by will121]
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JeffJeffers
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| posted on 5/11/10 at 01:16 PM |
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I didn't think that seemed right.
I can't see it being to hard to make a better job. I could take some measurements off this if that would help someone to make one.
I payed £150 for this thinking that would be cheaper way to get my car running.
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mattyc
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| posted on 5/11/10 at 01:35 PM |
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If you could take some for me that would be good.
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MikeR
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| posted on 5/11/10 at 02:08 PM |
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i'd like a copy of the measurements as well please (and some photos).
cheers.
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big_wasa
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| posted on 5/11/10 at 02:47 PM |
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Yep its crap 
What about getting together and getting one cast ?
There is a firm doing one for the x flow, and cosworth amongst others do one for the duratec.
I can take some dimensions of mine ?
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DaveFJ
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| posted on 5/11/10 at 03:10 PM |
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looks pretty small? i thought the rule of thumb was 'twice the capacity of your engine' ?
Dave
"In Support of Help the Heroes" - Always
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loggyboy
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| posted on 5/11/10 at 03:18 PM |
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Is it steel or ally?
Those welds look attrocious!
I'd want a lot more discount or a refund!!
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FASTdan
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| posted on 5/11/10 at 03:20 PM |
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any pics of the injector side? what does he do for the injector mounting?
presumably they are left like that to try and 'mimick' velocity stacks.
NEW danST WEBSITE NOW LIVE! Bike carbs, throttle bodies and more......
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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big_wasa
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| posted on 5/11/10 at 07:26 PM |
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Link
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interestedparty
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| posted on 5/11/10 at 07:54 PM |
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Why would people want the measurements if they think the design is cr*p?
As some day it may happen that a victim must be found,
I've got a little list-- I've got a little list
Of society offenders who might well be underground,
And who never would be missed-- who never would be missed!
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big_wasa
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| posted on 5/11/10 at 08:02 PM |
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quote:
Originally posted by interestedparty
Why would people want the measurements if they think the design is cr*p?
Its the build quality that is crap, well for the money anyway. The idea works fine. The runners should stick through as per the griffin design but not
that much.
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i_froloshki
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| posted on 6/11/10 at 04:32 PM |
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Do we have pics from the injector side and measurements?
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JeffJeffers
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| posted on 6/11/10 at 05:30 PM |
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Sorry I left it at work and I'm not back till Monday. I'll take pictures then.
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cliftyhanger
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| posted on 6/11/10 at 05:50 PM |
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surely the runners need a radius on the end for good airflow?? That would help a fair bit I suspect, though make fabrication harder. Even the old
Triumph PI (remember those?) had trumpets inside the plenium. Then again that system was developed by Lucas for F1 cars back in the early 60's
so probably had a large budget, even then.
The runner lengths should be failry easy to work out, the jenvey site has some figures for v. high revving motors and a rule of thumb calculation for
others max rpm's.
However all this is surely governed buy available space and budgets
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big_wasa
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| posted on 7/11/10 at 09:19 PM |
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Image deleted by owner
Image deleted by owner
Image deleted by owner
[Edited on 7/11/10 by big_wasa]
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FASTdan
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| posted on 7/11/10 at 10:32 PM |
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What fuel rail and injectors is that?
NEW danST WEBSITE NOW LIVE! Bike carbs, throttle bodies and more......
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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NS Dev
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| posted on 8/11/10 at 09:31 AM |
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the rail looks like 8 valve 2.0 vauxhall engine (20seh)
no idea what the injectors are!
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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coyoteboy
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| posted on 8/11/10 at 10:21 AM |
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That first one is a proper shocker!
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big_wasa
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| posted on 8/11/10 at 12:17 PM |
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I havnt bought one, I just asked for detailed pics to gauge fitting  and that was all I needed to keep my money.
Injectors are the standard end fed bosch type as fitted to the black top zetec. As for fuel rail I dont know what that one is from but the black top
one could be used just fine.
I plan on making another after xmas. I was thinking of using a cosi Tb to make the idle controle valve easier.
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