HELP me rebuild my b16 plzz!
03-18-2009, 05:57 PM
#1
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HELP me rebuild my b16 plzz!
im rebuilding my head first. heres a list of what i wanna do and i was just wanting others advice.
dual springs
retainers
valves
all new gaskets
i was going to orders new valves and do i have to get over size valves or would standard size valves fit??
and what you think is best springs and valves and retainers to get???
THANKS!
dual springs
retainers
valves
all new gaskets
i was going to orders new valves and do i have to get over size valves or would standard size valves fit??
and what you think is best springs and valves and retainers to get???
THANKS!
03-18-2009, 07:11 PM
#4
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Re: HELP me rebuild my b16 plzz!
well my first question is what kinda budget are you talking about. also is this a N/A build or boost?
here my list of head upgrades:
first of all id strip it down and do what measuring my tools allow and take it to a machine shop to have things like valve guides and valve seat angles checked. also they will check the deck and make sure it is flat and square along with a good cleaning.
so once all of that is done and i now have a good solid starting point with the head.
the list is:
springs, maybe duals, not sure but definitely high tension and durable.
valves, maybe slightly larger depending on what im going for with the engine, stainless, sodium filled exhaust valves.
titanium retainers
cams matched to what im wanting out of the engine
adjustable cam gear/s(not all manufacturers use 2 cam gears on a dual cam head)
3-angle valve job(maybe 5-angle valve job) the valve job is the most important part of head flow characteristics. it is the last thing before air enters the cylinder so a good solid valve job is CRITICAL.
port matching my intake and exhaust to the head is also a good idea.
actually porting by removing material in the head should only be done with a flow bench to know where you need to take material away. simply making ports larger is not always the best idea so i would advise against that.
polishing is a bad idea period............CLEANING up the port is not. alot of castings are very dirty and have very rough surfaces so smoothing this a lil can be a HUGE help, but polished ports actually disrupt airflow.
think of a golf ball. it has the dimples to HELP air flow around it. its relatively easy to hit a golfball in a straight line. now think of a ping pong ball and how hard it is to get one to fly straight. the same principles apply to airflow in a head.
im really sorry for the science lesson, but i get on an idea and i lose myself in it.
here my list of head upgrades:
first of all id strip it down and do what measuring my tools allow and take it to a machine shop to have things like valve guides and valve seat angles checked. also they will check the deck and make sure it is flat and square along with a good cleaning.
so once all of that is done and i now have a good solid starting point with the head.
the list is:
springs, maybe duals, not sure but definitely high tension and durable.
valves, maybe slightly larger depending on what im going for with the engine, stainless, sodium filled exhaust valves.
titanium retainers
cams matched to what im wanting out of the engine
adjustable cam gear/s(not all manufacturers use 2 cam gears on a dual cam head)
3-angle valve job(maybe 5-angle valve job) the valve job is the most important part of head flow characteristics. it is the last thing before air enters the cylinder so a good solid valve job is CRITICAL.
port matching my intake and exhaust to the head is also a good idea.
actually porting by removing material in the head should only be done with a flow bench to know where you need to take material away. simply making ports larger is not always the best idea so i would advise against that.
polishing is a bad idea period............CLEANING up the port is not. alot of castings are very dirty and have very rough surfaces so smoothing this a lil can be a HUGE help, but polished ports actually disrupt airflow.
think of a golf ball. it has the dimples to HELP air flow around it. its relatively easy to hit a golfball in a straight line. now think of a ping pong ball and how hard it is to get one to fly straight. the same principles apply to airflow in a head.
im really sorry for the science lesson, but i get on an idea and i lose myself in it.
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