Honda K20a TypeR PRB Head Pocket Port and Full Portwork
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- čas přidán 16. 04. 2023
- As we work on this K20a PRB head casting off an Integra DC5
we decided to show you guys a pocket ported head
prior to continuing towards a fully ported head as we planned to
This is for the upcoming K20a TypeR rebuild project with a twist!
we also talk about bowl work and carbide approach and then ofcourse
towards the 80grit finish/work and taking it a detailed step further
and going with a 120grit finish on the exhaust ports
we did talk about our past works with Prodigy Race Engines from Minnesota
as well as a couple of contenders that competed at the
World Time Attack Challenge in Sydney Australia.
I hope this gives you guys a few good views and perception when it comes to having your head ported from someone reputable
as mentioned about my issue on having my facebook account hacked
here's where you can get in touch with me at our Instagram account at
/ ralfsrdms
@ralfsrdms is searchable in IG
#SRDmotorsports
#k20a
#prb
#Vtec Academy
#Young Static
#K20a TypeR PRB pocket porting and full portwork
#pfi
#K20a TypeR PRB pocket port and full portwork
#ipg
#Hondata
#Hondata kpro v4
#Motec
#assetto corsa competizione
#Haltech
#hondata s300 - Auta a dopravní prostředky
Here’s the Kseries builds/projects playlist for you guys
czcams.com/play/PLSfTkjTlf41HQGxKSRK7SBqRrGkJXawyS.html
I know the b series type r heads came ported from the factory I'm not sure of they did that to the k series as well. The head on those Ks are crazy good, goes to show a great flowing and efficient head can do wonders, great video brother
Yeah the Bseries do come like that
Great observation brother!
@@SRDmotorsports yesirr thanks
hehehe atleast
🔥🔥🔥👌
Yes siiiiirrrr
can you get your hands on a K24Z cylinder head and port intake and exhaust
depends maybe locally we don’t have that
Nice vids! Im about to do the porting job on my RSP-2 head. Did you ever have one of these? Because it looks pretty well ported already and i'm about to run at 12.5cr with big lift cams and itb, so it should be capaple of 10k rpm. Is there more porting needed than this? And do i have to increase the diameter on the intake ports or is this useless unless you use oversized valves?
Love from Germany ✌️
U can do just a simple pocket port style clean up and yes the RSP is a nice head
Thanks Ralph for every video you make ! Really prepared and really serious stuff!!
If you were in Europe i'll be glad to let my P30 Head be ported by you ahaha
Btw what's the approx gain on a fairly stock engine (only Intake/header/exhaust) in terms of nm and hp for a head porting? (b16a2 160hp)
Thanks for that man I appriciate that!
Gains actually depends especially on tuning it can be anywhere from 8-10hp to even 15-18hp
Great video great content do u ever use the buffing pad to port they are really good
I don’t have much of those but I know the scotch brite ones does real good finish,
But the 120grit + ethyl alc/dishwashing soap works good atleast for me hehe
@@SRDmotorsports are you using soap/water mix with alcohol? Or just soap and alchol mix?
The dishwashing soap “Joy” in brand here is liquid and thee ethyl alcohol is liquid so it liquifies it further….
But that’s it no need to add water, well u can try and test it out too and see what works for you
did you make the tool you are using with the 80grit yourself or is there a way I can buy that online? i'm using a standard dremel and have to get to close to the valve seets and i'm afraid i might screw them up.
It’s just a 6 in shafting I chopped I believe it’s a Ducati or harley steel pushrod (I think Harley)
but the more proper Standard Abrasives shank (6in) is a lot better cuz the sanding / cartridge rolls are better shaped conically letting u make a way better finish
I believe Standard Abrasives are still in business in the US and they got a 6in long shank
@@SRDmotorsports Thanks a lot!
no worries man! the spray lube I use is a self made one a mix of ethyl alc and dishwashing soap or liquid soap
Great video 👍what do you think of Dimple porting
That’s a great question however debatable and I wish not to offend those who do it differently be it erroneously or not hehehe
but I’m sure u can fill ur own answers on that
And to stay on topic il share inputs :
The reason for pocket porting if not fully ported is to let the transition be better than “as cast” and if that is improved you “recharge” the air and fuel mix into the chamber across the valve seat and past the valves… this in turn makes it more efficient by way of “less drag”
a lot of times that’s forgotten due to being fixated on “flow” but drag exists
unless we see a “rough” textured wing or a rough textured huracan and it’s better? hmmmm
@@SRDmotorsports yes I done a bit looking into it and seen mixed results on it that why I interested in your views on it as I would consider you to be best in business
Pocket port as work you have done on this head is best all round setup this what I do on any my own heads just so for myself now I have always been doing 80 finish on intake and 120 on exhaust from what I have seen was the best to go to because exhaust smooth and intake bit rough for best air fuel mixture but I see you finished intake 120 too so is this what I should be finishing the intake too on my heads from now on
Wow good attention to detail
And nice we do the same I use 80grit finish on intake and 120g on exhaust
on usual occasions like this I go 120 on intake mainly cuz even the stock Kseries injectors spray “better” than our old Bseries and Dseries
And I know this one will run the newer ID injectors too so that’s as good or better…
my earlier answer is also the reason I do the “bowls” on the intake to 120grit on others even if the rest of the port is 80grit (that’s a secret lol)
@@SRDmotorsports wow thanks for that secret now you say that it makes prefect sense so what your doing is were it is straight at start leave 80 grit for mixture and 120 grit on turn because it near valve and turning so has more drag compare to start and that way it have even flow from start to finish
Thanks as said I love really technical things but only for myself and my own projects
yes ideally we want the valve seat (where the valve job is done) to get the most charge passing thru it cuz it’s how it shines well
In the end we just “filled” the chamber maybe more than usual and that’s power hehe
How much bhp does this increase ?
It really depends on how much the engine needs to breath it depends
It could be 5-8hp to even 15-18hp or up to 30-40hp
been out a few days!! haha
I noticed! Hope all is good man
@@SRDmotorsports no worries man..all is good, just got caught up at work lately🤣
Oh the “real” stuff lol
@@SRDmotorsports haha..yah..but man that port job is awesome man...the shirt vid showing the port job is much better than the pic coz we can see the angles way better.
so true on the short vid cuz we can see it thru movement and light reflection
I mean the photos is as clear but the slight motion helps show what I see