Advices sought on Cambshafts for NB1/NA build
#1
Advices sought on Cambshafts for NB1/NA build
Hi All,
I am building a DD motor that will also see track time for my 2000. I have the bottom end assembled and ready to go with 11:1 compression pistons.
Now I need to make some decisions on the head. I don't have the fund to go all out on the head. It will be a basic port and polish. However, I want to put in the biggest camshafts that will work with the stock valve train components.
Here are a couple of my questions:
1) How much valve lift can I run before I need to go SUB
2) Looks like webcams is the only outfit that offers reasonably priced cams for NB1s. Any other options? I have done a few searches and that is the conclusion that I came up. I am asking in case I missed something.
I am building a DD motor that will also see track time for my 2000. I have the bottom end assembled and ready to go with 11:1 compression pistons.
Now I need to make some decisions on the head. I don't have the fund to go all out on the head. It will be a basic port and polish. However, I want to put in the biggest camshafts that will work with the stock valve train components.
Here are a couple of my questions:
1) How much valve lift can I run before I need to go SUB
2) Looks like webcams is the only outfit that offers reasonably priced cams for NB1s. Any other options? I have done a few searches and that is the conclusion that I came up. I am asking in case I missed something.
#2
I ran a Webcam grind #222 which has a duration of 237 advertised, 214 @.050, and .370" lift. It is a very streetable cam, and I ran it using the stock valves and springs on a ported 95 head. I chose to run SUBs to squeeze a little more power out of it, but you do not need to with that cam.
I had to clearance the lifter holes for the intake cam to clear on the 95 head, but when I switched to the 99 head, it fit with no other modification. For my taste, I thought it was way too mild, but I did get the car to run pretty good with it.
I am not exactly sure what the limits are using the stock valvetrain. Webcam will guide you in the right direction as far as what components you will need for various grinds.
I had to clearance the lifter holes for the intake cam to clear on the 95 head, but when I switched to the 99 head, it fit with no other modification. For my taste, I thought it was way too mild, but I did get the car to run pretty good with it.
I am not exactly sure what the limits are using the stock valvetrain. Webcam will guide you in the right direction as far as what components you will need for various grinds.
#3
miata2fast,
Thanks for the detailed reply here. I talked to webcams yesterday. The gal I talked to seemed pretty knowledgeable. she did mention the 222 grind. The other suggestion was the 222/516 grind. The 516 has a little more lift .385" and duration at and 224@.05" than the 222.
Not sure if there is any down side to the longer duration on the exhaust side. I cannot think of any downside to it.
I like the fact that the 222 grind is streetable. I am leaning in that direction.
Thanks for the detailed reply here. I talked to webcams yesterday. The gal I talked to seemed pretty knowledgeable. she did mention the 222 grind. The other suggestion was the 222/516 grind. The 516 has a little more lift .385" and duration at and 224@.05" than the 222.
Not sure if there is any down side to the longer duration on the exhaust side. I cannot think of any downside to it.
I like the fact that the 222 grind is streetable. I am leaning in that direction.
#5
I ran a Webcam grind #222 which has a duration of 237 advertised, 214 @.050, and .370" lift. It is a very streetable cam, and I ran it using the stock valves and springs on a ported 95 head. I chose to run SUBs to squeeze a little more power out of it, but you do not need to with that cam.
I had to clearance the lifter holes for the intake cam to clear on the 95 head, but when I switched to the 99 head, it fit with no other modification. For my taste, I thought it was way too mild, but I did get the car to run pretty good with it.
I am not exactly sure what the limits are using the stock valvetrain. Webcam will guide you in the right direction as far as what components you will need for various grinds.
I had to clearance the lifter holes for the intake cam to clear on the 95 head, but when I switched to the 99 head, it fit with no other modification. For my taste, I thought it was way too mild, but I did get the car to run pretty good with it.
I am not exactly sure what the limits are using the stock valvetrain. Webcam will guide you in the right direction as far as what components you will need for various grinds.
#6
I would stay away from the 222 grind. The 30 grind is real close @.050 but with much less overlap @.010
..............222.........30
@.010....275.......248
@.050....213.......216
.....Lift....366.......365
I started looking at the 222 before I chose my cams. After talking to Faith (I recommend her!) she pointed out how poor the ramps were on the 222 grind.
In you shoes I would do the 506 grind intake and exhaust. She said they had great luck with that grind on other 99 heads. 246@.010, 214 @.050 and .389 lift.
IMHO you want new valve springs with any of these. Supertech light doubles would be ideal. Trackspeed is where I got mine.
..............222.........30
@.010....275.......248
@.050....213.......216
.....Lift....366.......365
I started looking at the 222 before I chose my cams. After talking to Faith (I recommend her!) she pointed out how poor the ramps were on the 222 grind.
In you shoes I would do the 506 grind intake and exhaust. She said they had great luck with that grind on other 99 heads. 246@.010, 214 @.050 and .389 lift.
IMHO you want new valve springs with any of these. Supertech light doubles would be ideal. Trackspeed is where I got mine.
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