Generic Tri-Y headers?
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Magana559
The Warden
piston to valve might be a issue if the head is milled. Make sure you lock the vtec lobe in place when you check p2v clearance.
v2v isnt going to be a issue on a stock head. you only start running into v2v clearance when you retard your exhaust cam on oversized valves.
vtec rocker arm not lobe lol
v2v isnt going to be a issue on a stock head. you only start running into v2v clearance when you retard your exhaust cam on oversized valves.
vtec rocker arm not lobe lol
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Head has not been milled (to my knowledge).
I've never done this on a vtec head before. Are there any tricks aside from this link that I should be aware of when locking the lobs?
Claying a motor - Honda, Acura Tech Website, tutorials, tuning and HOW-TO's. Drag racing, street racing, road racing - C-speedracing.com
Also what is "sufficient clearance"? And what should I set the gears to? 4 degrees at most i suppose?
I've never done this on a vtec head before. Are there any tricks aside from this link that I should be aware of when locking the lobs?
Claying a motor - Honda, Acura Tech Website, tutorials, tuning and HOW-TO's. Drag racing, street racing, road racing - C-speedracing.com
Also what is "sufficient clearance"? And what should I set the gears to? 4 degrees at most i suppose?
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you dont need clay. use a dial indicator, its way more accurate. thats what i did.
i dont remember exactly how i locked the rockers to ride the vtec lobe, but IIRC i stuck a BB or small piece of plastic behind the pin that locks the rockers together. this keep the pin extended into the vtec rocker so it rides that lobe on the cam.
what i did was basically:
lock VTEC rocker
mock up the engine, install pistons, head, cams/gears, HG, TB. put bottom end at TDC, loosen all cam gear bolts so you can move them independently of the gears.
advance intake cam until you feel the valve make contact with the piston (GO SLOW!!!)
set dial indicator to zero and mount to valvestem
back off the cam to your desired minimum clearance. note the amount of degrees on the cam gear, thats the max setting you can run safely on your cam gear.
do the same for the exhaust cam
its been so long since i did this so i might have advance/retard backwards. also i think i use .030"/.040" int/ext as my p2v clearances, but that could be wrong too. ill have to see if i can dig up a post. im sure i made one at some point
i dont remember exactly how i locked the rockers to ride the vtec lobe, but IIRC i stuck a BB or small piece of plastic behind the pin that locks the rockers together. this keep the pin extended into the vtec rocker so it rides that lobe on the cam.
what i did was basically:
lock VTEC rocker
mock up the engine, install pistons, head, cams/gears, HG, TB. put bottom end at TDC, loosen all cam gear bolts so you can move them independently of the gears.
advance intake cam until you feel the valve make contact with the piston (GO SLOW!!!)
set dial indicator to zero and mount to valvestem
back off the cam to your desired minimum clearance. note the amount of degrees on the cam gear, thats the max setting you can run safely on your cam gear.
do the same for the exhaust cam
its been so long since i did this so i might have advance/retard backwards. also i think i use .030"/.040" int/ext as my p2v clearances, but that could be wrong too. ill have to see if i can dig up a post. im sure i made one at some point
Magana559
The Warden
this should help
how to: V2V and P2V - Honda-Tech
BTW ill be swaping the header out and making some pulls on the dyno to see gains/losses if any. should be some time next week or some time within 2 weeks.
how to: V2V and P2V - Honda-Tech
BTW ill be swaping the header out and making some pulls on the dyno to see gains/losses if any. should be some time next week or some time within 2 weeks.
josh_crewdson@y
New Member
how did that header fit? any custom exhaust work? if so, what?