none so far. i haven't had much time this weekend to look too deeply into it. found out that the car doesn't start when the power is diconnected from the j&s. i'm gonna bypass the j&s competely today hopefully. steve from nsn thinks it could be that the cam sensor is either not picking up the nubs on the gears or it's reading the set screws used to make the adjustments. there is essentially no room around the nubs to allow me to back them off. i'll probably just put the stock gears back on to see if that helps.
Twiggy Sticks Install, tuning and results thread
- Thread starter LordWorm
- Start date
problem fixed, it was the sr cam gears. the cam position sensor wasn't reading the gear. i've still got an adjustable gear on the intake side so i've got a little bit of overlap but not nearly enough. once i here back from my local tuner, i'll get her put on the dyno and see what she can do. i expect some good results, she pulls hard(compared to what it was) from 4k to 7k(headbang)
can you get the exhaust gear modified to fix the issue?
countersink the bolts and so forth?
GB for adj cam gears here:
http://www.mazdas247.com/forum/showthread.php?t=123679641
http://www.mazdas247.com/forum/showthread.php?t=123679641
not to sure what's needed to be done to get the sensor to read it. i bought the gears from protege garage and ken always backs up the products he sells so i'm waiting to hear back from him. either way i doubt it will be solved by the end of summer. i'm just glad it's running like it should, just in time for a big autox event next weekend.
The only problem my SR cam gears may be causing is a change to the rpm the that the injectors restart at 0% TPS. I think it was 1400 stock, then 2000 with SR until I reduced the overlap. Now it's about 1,000rpm.
Only a problem when driving very slowly and not so bad now with new engine mounts. I try to coast in neutral to avoid the embarassing bucking as the injectors cut in and out. I'm wondering how to deal with this if I need to reduce overlap further once turbocharged.
Only a problem when driving very slowly and not so bad now with new engine mounts. I try to coast in neutral to avoid the embarassing bucking as the injectors cut in and out. I'm wondering how to deal with this if I need to reduce overlap further once turbocharged.
Greensleeper
Member
- :
- 2 GX 2011
Just have recieved the set of MZ_ZOOM! So hopefully this winter I will install those in a Speed Circuit Stage II head and be running a Microtech! 
yashart_mp3
Member
- :
- Black Mica MS3
After about 17 total hours in the garage, the cams are in and running nicely. I changed all my belts and placed the stock rear motor mount back in as well, as well as a slew of other little things to the interior. On the first install attempt, I didn’t have the intake cam timing mark down, so the car would turn over, but I got no spark. I took everything apart again, and set the timing correct put everything back together and the car started right up. With the catless midpipe, the car sounds very mean. The exhaust note was deep, almost like a V8. I haven’t really driven the car hard yet, because the cams need to “settle in”. What I can tell you is this… I had to put the stock midpipe back in (with 2 cats) this morning to pass emissions. At 60% throttle, with the stock restrictive exhaust, the car pulls just as hard as when I had the catless midpipe installed without the cams, at full throttle. I’ve got about 200 miles on the cams already, so hopefully I’ll be able to really see what they’ve got by the end of next week.
There are some issues I need to address though….
1) I can’t tell if I am getting valve chatter or not. I can’t tell if it is just the sound of the new cams, or the valves actually hitting the pistons. I am running marginally tight on the exhaust cam (.17 - .19 valve clearance). I’ll have to get It on a dyno and to get a better listen. The cams completely changed the sound of the motor. With the stock intake and before the cams, I would never hear the “turkey” sound of the bov. Now I hear it. I can also hear the turbo whistle under light acceleration, which I never heard before the cams.
2) White tipped spark plugs FTL. I need to pick up a SMIC ASAP. Before installing the cams, I noticed my plugs were seeing detonation. Although they do need to be replaced since they are at the end of their life span, I need to find a way to lower the intake charge. The detonation could have also been a result of the bad thermostat/ overheating issues I was having. Hopefully I’ll be able to replace the plugs tonight and I’ll check them over the next 2 weeks to see if the issue returns.
Needless to say, I’m rather happy. It def game me the top end my car was lacking. They kick in around 4k and hit 7k before you even realize it. I'm not 100% sold that it was worth the wait, but they do put a big smile on my face. I can't wait to get my midpipe back in, and also a SMIC.
I'll report back with any issues/updates/concerns/findings/etc. and probably a dyno soon
There are some issues I need to address though….
1) I can’t tell if I am getting valve chatter or not. I can’t tell if it is just the sound of the new cams, or the valves actually hitting the pistons. I am running marginally tight on the exhaust cam (.17 - .19 valve clearance). I’ll have to get It on a dyno and to get a better listen. The cams completely changed the sound of the motor. With the stock intake and before the cams, I would never hear the “turkey” sound of the bov. Now I hear it. I can also hear the turbo whistle under light acceleration, which I never heard before the cams.
2) White tipped spark plugs FTL. I need to pick up a SMIC ASAP. Before installing the cams, I noticed my plugs were seeing detonation. Although they do need to be replaced since they are at the end of their life span, I need to find a way to lower the intake charge. The detonation could have also been a result of the bad thermostat/ overheating issues I was having. Hopefully I’ll be able to replace the plugs tonight and I’ll check them over the next 2 weeks to see if the issue returns.
Needless to say, I’m rather happy. It def game me the top end my car was lacking. They kick in around 4k and hit 7k before you even realize it. I'm not 100% sold that it was worth the wait, but they do put a big smile on my face. I can't wait to get my midpipe back in, and also a SMIC.
I'll report back with any issues/updates/concerns/findings/etc. and probably a dyno soon
sweet action i love to hear when people get these in and they work great
i can't wait to get back to mine one of these days
as far as i know the enginge is non-interferance...so no piston to valve contact...and if it did...oh, you'ld know it
is your engine on stock internals?
if you've had detonation or overly-high engine temps
my money is on your crank bearings
they are the main week point in the FS and when they start to go they sound exactly like valves ...but the heads on the FS are really well built
valve seals are a little shabby but the guides and seats rarely are in question
besides "slappy valves are happy valves"
i can't wait to get back to mine one of these days
as far as i know the enginge is non-interferance...so no piston to valve contact...and if it did...oh, you'ld know it
is your engine on stock internals?
if you've had detonation or overly-high engine temps
my money is on your crank bearings
they are the main week point in the FS and when they start to go they sound exactly like valves ...but the heads on the FS are really well built
valve seals are a little shabby but the guides and seats rarely are in question
besides "slappy valves are happy valves"
even if it WAS an interference motor, it would only become an issue if you had gross cam timing issues, or threw a timing belt. If you were hitting the pistons at any rate, you'd know about it...
The note of the motor changes significantly with the cams - the motor sounds more angry, like just wants to jump out of its skin and beat up on someone...
Good to hear another turbo guy enjoying the kick at 4k. Wish i was in the states to experience it first hand - i get a kick, but nowhere near as wild as what it would be on a turbo motor!
The note of the motor changes significantly with the cams - the motor sounds more angry, like just wants to jump out of its skin and beat up on someone...
Good to hear another turbo guy enjoying the kick at 4k. Wish i was in the states to experience it first hand - i get a kick, but nowhere near as wild as what it would be on a turbo motor!
yashart_mp3
Member
- :
- Black Mica MS3
Small update
These cams are sick. I finally installed my intake, hardpipes, and smic, which were my biggest restrictions on the car at this point. Even with the stock ecu, the car pulled amazingly hard all the way to redline. The cams seem to "kick in" around 4k, but they continue to gain power until about 5k. Then at 5.5K, the stock MSP ecu has a timing jump, and the car pulls even harder until redline. Mind you, Im only at stock boost
As a testimony of the power I'm making with these things, at stock boost, with the stock ecu, I did a 3rd gear pull and was dead even with an 07 Legacy GT. Hes a 3" perrin downpipe, perrin UDP, and borla catback. For those of you who don't know, the Legacy GT is pretty much a detuned STI. His mods put him right around stock STI power/speed. Remember, this is on the stock ecu (running super rich) and at stock boost!
I installed my AFC V2 last night, and the stock super map just doesn't give enough fuel for these cams. By 5k, I am running 12.8 AFR, so i get off the gas. I need to adjust the maps and then hit the Dyno. More to come!
Guys, If you haven't already, hurry up and get these damn things installed ASAP. You won't be disappointed.
These cams are sick. I finally installed my intake, hardpipes, and smic, which were my biggest restrictions on the car at this point. Even with the stock ecu, the car pulled amazingly hard all the way to redline. The cams seem to "kick in" around 4k, but they continue to gain power until about 5k. Then at 5.5K, the stock MSP ecu has a timing jump, and the car pulls even harder until redline. Mind you, Im only at stock boost
As a testimony of the power I'm making with these things, at stock boost, with the stock ecu, I did a 3rd gear pull and was dead even with an 07 Legacy GT. Hes a 3" perrin downpipe, perrin UDP, and borla catback. For those of you who don't know, the Legacy GT is pretty much a detuned STI. His mods put him right around stock STI power/speed. Remember, this is on the stock ecu (running super rich) and at stock boost!
I installed my AFC V2 last night, and the stock super map just doesn't give enough fuel for these cams. By 5k, I am running 12.8 AFR, so i get off the gas. I need to adjust the maps and then hit the Dyno. More to come!
Guys, If you haven't already, hurry up and get these damn things installed ASAP. You won't be disappointed.
Small update
These cams are sick. I finally installed my intake, hardpipes, and smic, which were my biggest restrictions on the car at this point. Even with the stock ecu, the car pulled amazingly hard all the way to redline. The cams seem to "kick in" around 4k, but they continue to gain power until about 5k. Then at 5.5K, the stock MSP ecu has a timing jump, and the car pulls even harder until redline. Mind you, Im only at stock boost
As a testimony of the power I'm making with these things, at stock boost, with the stock ecu, I did a 3rd gear pull and was dead even with an 07 Legacy GT. Hes a 3" perrin downpipe, perrin UDP, and borla catback. For those of you who don't know, the Legacy GT is pretty much a detuned STI. His mods put him right around stock STI power/speed. Remember, this is on the stock ecu (running super rich) and at stock boost!
I installed my AFC V2 last night, and the stock super map just doesn't give enough fuel for these cams. By 5k, I am running 12.8 AFR, so i get off the gas. I need to adjust the maps and then hit the Dyno. More to come!
Guys, If you haven't already, hurry up and get these damn things installed ASAP. You won't be disappointed.
awesome! get some management, then get it on the dyno
???
what exactly do you mean "trimming"
...like around the stems diameter?
you might shave some grams but i could really
see things getting screwed up at high revs or high temps
jimmysuite
Member
- :
- 2003 Mazda Protege5
Does anyone know if there would be a problem with (piston/valve) clearance if I ran these cams with the FS-ZE 10.4:1 compression ratio pistons from corksport?
