Brian Crower Cam problem - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Camo · 10-22-2008, 12:27 AM

So I dropped some BC step 2 cams in my car tonight. Checked the timing and everything appears to be correct. Went pretty smooth and Ive done this before(although not with aftermarket cams).

Now I have to advance the ignition timing a little bit to get 15-20in of vaccum or its really lopy. 2-4k rpm is dead if I roll into the throttle slowly(vaccum hovers around 5in), fucking screams if you just tach it out.

Im pretty sure Ive got some overlap.

Heres my question, should I bump the intake back a tooth or the exhaust forward a tooth, or both. I know with adjustable sprockets you can get quite a bit out of em, but I dont have those. Anybody with similar cams, have any suggestions?

*slider2828* · 10-22-2008, 12:30 AM

What duration and lift did you get.... If you got a huge duration and lift, don't bother, its just how it is unless you get timing gears and get it really tuned.

Camo · 10-22-2008, 12:34 AM

264/264/ 12.06/12.06

Camo · 10-22-2008, 12:42 AM

I dunno what the problem is. I think its just late and Im tired. Well see what happends tommorow.

*fliprayzin240sx* · 10-22-2008, 03:30 AM

12.06...yah you need cam gears to tweak it. Not exactly drop-ins...

aNskY · 10-22-2008, 10:00 AM

i have the same cams and had the same problem in the small time that my shit was running... real laggy off boost. definately a tuning issue. get them degreed and tuned and let me know what works please!

edit: you dont have upgraded springs? these cams have 30% more lift than stock, hope those valves dont float

Camo · 10-22-2008, 11:42 AM

bc springs and retainers. Im gonna play around with it today and see what I can do.

S13NismoStyle · 10-22-2008, 03:59 PM

Im having a very similar problem with the same cams in my sr. Im pulling 18 inhg at stock timing, but my car is dead from 2k-4k as well. also my turbo is spooling like 800rpms later than it used to. I was told that the cams might need to be 'tweeked'.

[email protected] · 10-22-2008, 04:09 PM

I was running the same cams and had no issues. Didn't lope really if you ask me. Gained ~25 rwhp after tuning vs stock cams and tuning.

Regards,
Robert

japslapsilvia · 10-22-2008, 05:24 PM

Quote:

Originally Posted by [email protected]

I was running the same cams and had no issues. Didn't lope really if you ask me. Gained ~25 rwhp after tuning vs stock cams and tuning.

Regards,
Robert

did you install them straight up or do you have cam gears and have then adjusted?

S13NismoStyle · 10-22-2008, 07:15 PM

also, what turbo are you running with those cams. and what rpms were your peak power gain?

*slider2828* · 10-23-2008, 12:09 AM

Dude on that lift, you NEED cam gears. THe tooth thing is NOT the right way to do it as that is a MAJOR adjust to cam overlap and timing.

[email protected] · 10-23-2008, 11:26 AM

Quote:

Originally Posted by japslapsilvia

did you install them straight up or do you have cam gears and have then adjusted?

They were installed straight up, no cam gears, no springs/retainers upgrade. Here is the before and after dyno sheets. I lost low/mid range power and picked up topend. I was running stock T25 at 14 psi prior to cams and 12.8-13 psi after on stock 370cc inj. Greddy FMIC, 3 inch d/p, boost logic 3 inch test pipe, and rsr gt-2.

Before (boost controller was not set properly)~14 psi 227 rwhp, 223 ft lbs

After(properly set boost controller, cams, ~13 psi, retune) 246 rwhp, 220 ft lbs, made 253 on 14 psi but our tuner told me he turned it down to 13 since we were close to maxing out the injectors

All in all it's an ok mod in my book for stock turbo but you really won't see great gains till you upgrade the turbo. I just did it for the hell of it to see what the gains were on stock SR.

Regards,
Robert

RMJmotor · 10-23-2008, 11:52 AM

Used the same cams on our old track car. It's all in the tune, I also ran stock gears.

Have a Haltech, LS1 Coils and a street ported head (mild port). Idle is smooth at 900 rpms, Vaccum is consistant at about 18inches. Engine revs up smooth and sweet, screams up top.

Its in the tune.

Camo · 10-23-2008, 12:06 PM

Turns out I was off a tooth on both gears. Retimed it to stock and it runs a little better. Still bogging on the low end, Im thinking due to overlap...

*slider2828* · 10-23-2008, 02:46 PM

Well probably lift too...

bp057 · 10-23-2008, 02:49 PM

I have the stage 2's. Dropped right in, advanced timing to about 25-26, still no pinging. Very noticeable going from 18-20 deg. to 25-26. I felt jipped until I advanced it.

sunnys14 · 10-23-2008, 04:22 PM

Quote:

Originally Posted by [email protected]

They were installed straight up, no cam gears, no springs/retainers upgrade. Here is the before and after dyno sheets. I lost low/mid range power and picked up topend. I was running stock T25 at 14 psi prior to cams and 12.8-13 psi after on stock 370cc inj. Greddy FMIC, 3 inch d/p, boost logic 3 inch test pipe, and rsr gt-2.

Before (boost controller was not set properly)~14 psi 227 rwhp, 223 ft lbs

After(properly set boost controller, cams, ~13 psi, retune) 246 rwhp, 220 ft lbs, made 253 on 14 psi but our tuner told me he turned it down to 13 since we were close to maxing out the injectors

All in all it's an ok mod in my book for stock turbo but you really won't see great gains till you upgrade the turbo. I just did it for the hell of it to see what the gains were on stock SR.

Regards,
Robert

So did you end up using cam gears?

[email protected] · 10-23-2008, 04:47 PM

Quote:

Originally Posted by sunnys14

So did you end up using cam gears?

Nope, just threw them in and ran with it. Blew the motor up(front main seal let go) so building another SR right now and plan to run HKS Step 2's.

Robert

EDIT:For the sake of testing I'll run my new setup with the BC cams with the 2871r and all the other stuff I'm doing, then switch to the HKS 264 Step 2's to see what happens. Might as well see which ones are going to give me more power since I have both sets already. :P

Camo · 10-23-2008, 05:09 PM

okay well I gotta have something fucked up here. Im gonna go ahead and pull it out since Ive got some other stuff I wanna do and take the front pan/front cover off.

slow92 · 10-23-2008, 06:12 PM

just a quick question since we are on this topic. I installed stage 2's and I can't get my car to start. it will crank and get to the point where it starts but then immediately stops. The cams were removed from a running car and installed into a running car. I am getting spark, fuel and air. I have taken the car apart 4 times to make sure that everything was installed correctly. Also, I have checked the cas at least twice every time I have re-installed everything.

Mods
sr20 blacktop
Haltech e8
cometic hg
stock cam gears

Please if any one can help it would be much appreciated

smelly240 · 10-24-2008, 04:33 AM

geez 26 degrees @ how much boost?!!?

i dont think i can run that much timing - lol

punkrico · 10-24-2008, 06:03 AM

soooo has anyone else had a good exp. with these cams?

smelly240 · 10-24-2008, 06:16 AM

mine work perfectly fine afaik... i can try turning up the timing this weekend and see if it gets faster - it runs good tho with 18-19

japslapsilvia · 10-24-2008, 07:00 AM

not to thread jack or anythign but i dont want to start a new thread for this, i am about to install the same cams in my car and was wondering if you guys use any "fine" sandpaper to remove the black coating from the lobes?

smelly240 · 10-24-2008, 07:16 AM

mine didnt have a coating IIRC... i just used the red goo

[email protected] · 10-24-2008, 09:08 AM

Quote:

Originally Posted by smelly240

mine didnt have a coating IIRC... i just used the red goo

Same here.

Robert

Camo · 10-24-2008, 09:27 AM

nothing on my cams, just brake clean em off and oil em up real good before you put em in. I advanced the timing quite a bit last night. Didn't seem to help that much besides the idle.

smelly240 · 10-24-2008, 09:46 AM

yeah - i dont think jacking timing is the way... You WILL lose bottom end with cams/intake mani... I have a pretty big turbo so I knew i wouldnt have shit til it got spinning. Mine idles pretty normal as well.

bp057 · 10-24-2008, 10:19 AM

Quote:

Originally Posted by smelly240

geez 26 degrees @ how much boost?!!?

i dont think i can run that much timing - lol

No boost, on a KADE, didnt see you were SR. Ill pay more attention next time.

10-22-2008, 12:27 AM	#1
Camo Leaky Injector Join Date: May 2008 Location: San Antonio Posts: 120 Trader Rating: (0) Feedback Score: 0 reviews	Brian Crower Cam problem So I dropped some BC step 2 cams in my car tonight. Checked the timing and everything appears to be correct. Went pretty smooth and Ive done this before(although not with aftermarket cams). Now I have to advance the ignition timing a little bit to get 15-20in of vaccum or its really lopy. 2-4k rpm is dead if I roll into the throttle slowly(vaccum hovers around 5in), fucking screams if you just tach it out. Im pretty sure Ive got some overlap. Heres my question, should I bump the intake back a tooth or the exhaust forward a tooth, or both. I know with adjustable sprockets you can get quite a bit out of em, but I dont have those. Anybody with similar cams, have any suggestions? __________________ Sittin' Sidways Since 2007

10-22-2008, 12:30 AM	#2
slider2828 Premium Member Join Date: Oct 2004 Location: San Francisco, CA Posts: 5,824 Trader Rating: (13) Feedback Score: 13 reviews	What duration and lift did you get.... If you got a huge duration and lift, don't bother, its just how it is unless you get timing gears and get it really tuned. __________________ Turn and Burn!

10-22-2008, 12:34 AM	#3
Camo Leaky Injector Join Date: May 2008 Location: San Antonio Posts: 120 Trader Rating: (0) Feedback Score: 0 reviews	264/264/ 12.06/12.06 __________________ Sittin' Sidways Since 2007

10-22-2008, 12:42 AM	#4
Camo Leaky Injector Join Date: May 2008 Location: San Antonio Posts: 120 Trader Rating: (0) Feedback Score: 0 reviews	I dunno what the problem is. I think its just late and Im tired. Well see what happends tommorow. __________________ Sittin' Sidways Since 2007

10-22-2008, 03:30 AM	#5
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	12.06...yah you need cam gears to tweak it. Not exactly drop-ins... __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

10-22-2008, 10:00 AM	#6
aNskY Nissanaholic! Join Date: Apr 2005 Location: NY Age: 37 Posts: 1,604 Trader Rating: (10) Feedback Score: 10 reviews	i have the same cams and had the same problem in the small time that my shit was running... real laggy off boost. definately a tuning issue. get them degreed and tuned and let me know what works please! edit: you dont have upgraded springs? these cams have 30% more lift than stock, hope those valves dont float

10-22-2008, 11:42 AM	#7
Camo Leaky Injector Join Date: May 2008 Location: San Antonio Posts: 120 Trader Rating: (0) Feedback Score: 0 reviews	bc springs and retainers. Im gonna play around with it today and see what I can do. __________________ Sittin' Sidways Since 2007

10-22-2008, 03:59 PM	#8
S13NismoStyle Zilvia Member Join Date: Sep 2005 Location: greenville, sc Posts: 186 Trader Rating: (7) Feedback Score: 7 reviews	Im having a very similar problem with the same cams in my sr. Im pulling 18 inhg at stock timing, but my car is dead from 2k-4k as well. also my turbo is spooling like 800rpms later than it used to. I was told that the cams might need to be 'tweeked'. __________________

10-22-2008, 04:09 PM	#9
[email protected] Zilvia FREAK! Join Date: May 2007 Location: Bridgeport,Tx Posts: 1,441 Trader Rating: (16) Feedback Score: 16 reviews	I was running the same cams and had no issues. Didn't lope really if you ask me. Gained ~25 rwhp after tuning vs stock cams and tuning. Regards, Robert

10-22-2008, 07:15 PM	#11
S13NismoStyle Zilvia Member Join Date: Sep 2005 Location: greenville, sc Posts: 186 Trader Rating: (7) Feedback Score: 7 reviews	also, what turbo are you running with those cams. and what rpms were your peak power gain? __________________

10-23-2008, 12:09 AM	#12
slider2828 Premium Member Join Date: Oct 2004 Location: San Francisco, CA Posts: 5,824 Trader Rating: (13) Feedback Score: 13 reviews	Dude on that lift, you NEED cam gears. THe tooth thing is NOT the right way to do it as that is a MAJOR adjust to cam overlap and timing. __________________ Turn and Burn!

10-23-2008, 11:52 AM	#14
RMJmotor Zilvia Addict Join Date: Dec 2003 Location: Moorpark, CA Age: 43 Posts: 755 Trader Rating: (6) Feedback Score: 6 reviews	Used the same cams on our old track car. It's all in the tune, I also ran stock gears. Have a Haltech, LS1 Coils and a street ported head (mild port). Idle is smooth at 900 rpms, Vaccum is consistant at about 18inches. Engine revs up smooth and sweet, screams up top. Its in the tune. __________________ Performance - Tech Support - rmjmotorsports.com

10-23-2008, 12:06 PM	#15
Camo Leaky Injector Join Date: May 2008 Location: San Antonio Posts: 120 Trader Rating: (0) Feedback Score: 0 reviews	Turns out I was off a tooth on both gears. Retimed it to stock and it runs a little better. Still bogging on the low end, Im thinking due to overlap... __________________ Sittin' Sidways Since 2007

10-23-2008, 02:46 PM	#16
slider2828 Premium Member Join Date: Oct 2004 Location: San Francisco, CA Posts: 5,824 Trader Rating: (13) Feedback Score: 13 reviews	Well probably lift too... __________________ Turn and Burn!

10-23-2008, 02:49 PM	#17
bp057 Zilvia Member Join Date: Nov 2004 Location: Rancho Santa Margarita, ca Age: 43 Posts: 237 Trader Rating: (2) Feedback Score: 2 reviews	I have the stage 2's. Dropped right in, advanced timing to about 25-26, still no pinging. Very noticeable going from 18-20 deg. to 25-26. I felt jipped until I advanced it.

10-23-2008, 05:09 PM	#20
Camo Leaky Injector Join Date: May 2008 Location: San Antonio Posts: 120 Trader Rating: (0) Feedback Score: 0 reviews	okay well I gotta have something fucked up here. Im gonna go ahead and pull it out since Ive got some other stuff I wanna do and take the front pan/front cover off. __________________ Sittin' Sidways Since 2007

10-23-2008, 06:12 PM	#21
slow92 Zilvia Junkie Join Date: Jun 2008 Location: NV Posts: 423 Trader Rating: (16) Feedback Score: 16 reviews	just a quick question since we are on this topic. I installed stage 2's and I can't get my car to start. it will crank and get to the point where it starts but then immediately stops. The cams were removed from a running car and installed into a running car. I am getting spark, fuel and air. I have taken the car apart 4 times to make sure that everything was installed correctly. Also, I have checked the cas at least twice every time I have re-installed everything. Mods sr20 blacktop Haltech e8 cometic hg stock cam gears Please if any one can help it would be much appreciated

10-24-2008, 04:33 AM	#22
smelly240 Nissanaholic! Join Date: Oct 2006 Location: Philaburbia Age: 43 Posts: 2,137 Trader Rating: (4) Feedback Score: 4 reviews	geez 26 degrees @ how much boost?!!? i dont think i can run that much timing - lol __________________ HREs on a S13 - check, 6262 - check, Girlfriend.... - nope

10-24-2008, 06:03 AM	#23
punkrico Leaky Injector Join Date: Apr 2006 Location: memphis Posts: 126 Trader Rating: (3) Feedback Score: 3 reviews	soooo has anyone else had a good exp. with these cams?

10-24-2008, 06:16 AM	#24
smelly240 Nissanaholic! Join Date: Oct 2006 Location: Philaburbia Age: 43 Posts: 2,137 Trader Rating: (4) Feedback Score: 4 reviews	mine work perfectly fine afaik... i can try turning up the timing this weekend and see if it gets faster - it runs good tho with 18-19 __________________ HREs on a S13 - check, 6262 - check, Girlfriend.... - nope

10-24-2008, 07:16 AM	#26
smelly240 Nissanaholic! Join Date: Oct 2006 Location: Philaburbia Age: 43 Posts: 2,137 Trader Rating: (4) Feedback Score: 4 reviews	mine didnt have a coating IIRC... i just used the red goo __________________ HREs on a S13 - check, 6262 - check, Girlfriend.... - nope

10-24-2008, 09:27 AM	#28
Camo Leaky Injector Join Date: May 2008 Location: San Antonio Posts: 120 Trader Rating: (0) Feedback Score: 0 reviews	nothing on my cams, just brake clean em off and oil em up real good before you put em in. I advanced the timing quite a bit last night. Didn't seem to help that much besides the idle. __________________ Sittin' Sidways Since 2007

10-24-2008, 09:46 AM	#29
smelly240 Nissanaholic! Join Date: Oct 2006 Location: Philaburbia Age: 43 Posts: 2,137 Trader Rating: (4) Feedback Score: 4 reviews	yeah - i dont think jacking timing is the way... You WILL lose bottom end with cams/intake mani... I have a pretty big turbo so I knew i wouldnt have shit til it got spinning. Mine idles pretty normal as well. __________________ HREs on a S13 - check, 6262 - check, Girlfriend.... - nope

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