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Extrude Honing

partyboy73

By partyboy73,
in Engines & Forced Induction

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juggernaut1 Proficient

juggernaut1

Posted
Posted

Andrew Sanders at Specialised Power Porting is the only place in OZ that I understand currently does this.

I have used his services on my exhaust manifold, intake manifold and compressor cover. From memory, 4 cylinder manifolds (intake or exhaust) were $550 each and comp cover around $300. Obviously these prices may have changed and will be more for 6 cylinder manifolds.

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tridentt150v Grand Master

tridentt150v

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Based purely on a power figure I'd agree, but has anyone measured the efficiency maybe as a fuel consumption figure?

If something flows better, it has to have benefit somewhere, even lower rpm for boost gains maybe?

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juggernaut1 Proficient

juggernaut1

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Posted (edited)
Based purely on a power figure I'd agree, but has anyone measured the efficiency maybe as a fuel consumption figure?

If something flows better, it has to have benefit somewhere, even lower rpm for boost gains maybe?

One of the advantages is extrude honing allows you to flow balance each runner as well as improve flow overall. For instance my sr20 intake manifold was all over the place and when extrude honed the runners all flowed within a few cfm of each other. Not to mention it also picked up nearly 50cfm of flow on the poorest flowing runner. Unfortunately I had a change of heart and am now installing a Hypertune manifold so I can't say what the real world results might have been with the extrude honed unit.

Edited by juggernaut1
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juggernaut1 Proficient

juggernaut1

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When I rang this place (about 15 months ago) he no longer did extrude honing as he had leased/sold his dies and gear to someone else. I think Unique Autosports used to use his services because when I ran Unique about the same time they also advised me they were no longer able to get manifolds extrude honed. Things may have changed now tho'.

Edited by juggernaut1
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SLY33 Mentor

SLY33

Posted
Posted
There was a thread on an extrude honed RB25 stock exhuast manifold and no real gains were recorded. Most likely the money can be better spent elsewhere.

Yeah that was my little experiment. From what i learned it depends on what turbo/power your going to run which will help you decide if honing the manifold will be worth it.

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