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The Darkside Project


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#2061 siztenboots

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Posted 09 February 2019 - 09:06 AM

not from Jim I hope



#2062 rob999

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Posted 09 February 2019 - 08:11 PM

Six month lead time isn’t bad 🙄

#2063 Arno

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Posted 11 February 2019 - 09:41 AM

Do any OEM's use a twin inlet port rather than a siamesed port? I've seen it on aftermarkets or exotic race heads but it doesn't seem to be adopted.


Has been done in some form like Vauxhall/GM used it on their twin-port engines in the Corsa's and the like.

 

Usually have to 'cheat' a little though as they tend to want to use a single injector, so often the two runners do share a single injector in case of a traditional port-injection setup using a section where the two runners have a shared 'raised roof' section. (direct injected engines like some of the CDTI's do have 8 intake ports on the head)

 

Toyota (and others) have used manifolds in the past with separate runners, often with butterflies/valves in 1 runner to increase air velocity at low load in the 'open' port/channel in the manifold (eg. TVIS system on 3SG(T)E engines).

 

Mostly done for fuel economy by OEMs at part-load to increase air velocities in the intake port and improve air-fuel mix in the combustion chamber.

 

Honda's VTEC-E system on the more eco-based engines does a similar thing by keeping 1 of the intake valves closed during part-load (so running it as a 12V engine) and switching to 16V mode in higher load conditions. This gives the same general result but does away with complicated manifold constructions with 8 runners or extra flaps.

 

Bye, Arno.



#2064 The Batman

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Posted 12 February 2019 - 01:20 AM

7dXdeuT.jpg

 

bbf9DCX.jpg

 

some lovely valves

 

914XXS2.jpg

 

0m7fTNU.jpg

 

balancer delete and new z4 oil pump

 

cHRGdw7.jpg

 

 

engine looking like an engine now!! 

 

4IoZoTQ.jpg

 

 

 

 

balancer delete and new z4 oil pump

 

cHRGdw7.jpg

 

 



#2065 gaffer1986

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Posted 12 February 2019 - 09:13 AM

Looks so clean!

#2066 The Batman

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Posted 12 February 2019 - 10:32 AM

Yeah! All been blasted and bolts been replated :wub:

#2067 rob999

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Posted 12 February 2019 - 09:12 PM

Is it in yet?

#2068 The Batman

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Posted 12 February 2019 - 09:18 PM

Na, hit a bit of a hiccup with the sump not fitting the latest spec pump so getting a new sump

Waiting on modified cam cover aswell

#2069 Aerodynamic

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Posted 13 February 2019 - 05:32 PM

What kind of modification on cam cover?

 

Na, hit a bit of a hiccup with the sump not fitting the latest spec pump so getting a new sump

Waiting on modified cam cover aswell

 



#2070 Aerodynamic

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Posted 13 February 2019 - 05:34 PM

Is your cam chain top giud updated? I know I bought a longer (wider) version of this for my Engine

This is to prevent any jumping change atleast on the camgears.

 

If you want I can see if I still have this partnumber somewhere.



#2071 The Batman

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Posted 13 February 2019 - 05:59 PM

Chains where genuine honda parts

 

Cam cover is having extra 2 breathers fitted to it :)






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