Hi everyone... I have a RHD CD4 chassis 96 Honda Accord EX..
Has the F20B2 engine (SOHC, non-vtec)

I have an offer from a machine shop to port and polish the head.. The shop guarantees (with flow bench) flow increases of at least 20%.. Most likely between 20-25% will be attained.



This is some of the shop's work on a B16A, so I just wanted to show the options available.. ie. stage 2 vs stage 3

At the moment, intake is a AEM SRI with cool air ducting, DC 4-2-1 header and APEXi WS2 exhaust.. Intake and exhaust restrictions are not a problem at all for me...

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Has anyone on the forum done similar work to a F22 head? If so what were the gains?
Also, will it make sense to pay the extra $130 to get the multi-angle valve job done? What additional potential power gain will I get from this?

At the moment, the head is stock, but in conjunction with porting I will install my custom Bisimoto level 1.5 cam and finally tune it all..

The total cost of porting will be somewhere in the region of $650 at this shop, and an additional $130 if I want the multi-angle stage 3 job..
Will the potential gains be worth this cost?

Thanks

 

bump for assistance please..

 

Probably a better alternative..... http://www.blacktrax.net/products/In..._Manifold.html

The results are pretty bad *** for the H22's - I would imagine it wouldn't take much to get it to fit on your F20 as it is compatible with the F22A....