Brian Crower 280's

[NOSLO2PT0]

Just an FYI. Once you eliminate the FIAV, you must let the car warm up a bit before it will idle. Big cams, little cams, ANY cams, just a fact.

 

[eclipsegsx1736]

Does anyone have a log of these new 280s? I don't need a comparison log, just something to put on the pavement would be nice.

Unfortunately my meth injection pump is acting up so I haven't been able to make a pull with the new 280s to compare. I havent forgotten. Hopefully I can fix the pump and post a log before the fp2's go back in.

 

[turbo90gsx]

I have been running the 280 cam for 3 months now and am having pretty good luck with them. This car right now is my daily driver and there are only a few issuse I have. Like most of you are saying, my idle quality is poor under cold engine conditions. However I too have no IAC or FIAV. Once the car is warm and the rich warm up is gone the car idles great. The other issue I have with the cam is a slight surging cruising at low rpms(below 3000). I have loged many hours of driving, many boost leak tests, and can only come to the concluision that it is possible I NEED to degree the cams. Unlike alot of you guys I've had my head decked 3 times and who knows how much, but it could have been enough to tamper with the alignment marks. I'am having other problems still with the car so I really have not been able to put them to the full rpm test. Still on stock IM too.

 

[boostedt28]

I just put these cams in and although I have some other issues to sort out before I can really beat on the car, I hope some of you that run these can answer 2 questions for me.
1. What is your vacuum at idle?
2. What is your idle set to?

 

[eclipsegsx1736]

Ok, finally got some back to back logs. These were done in the same weather, with the car being warmed up for the same time both times. MBC wasn't touched, no tune settings were changed either. The MAF is calibrated the same in both...the GreddyBoost60 input is off by about 4 psi at full boost but other than that it's consistent between pulls. Boost was at 26ish psi in both.

As you can see from the logs, with the 280 cams I LOST airflow up top, even with the boost being slightly HIGHER on the 280 log..Not to mention my low end power was lost and spoolup time was lost. These are 2nd gear pulls BTW, hence the later spool. I wanted to take it to 8000 in both and 3rd gear wasn't really an option right now. Peak MAF reading went from 2907 (FP2's) to 2740 (280s) once again with the 280 log being slightly higher boost (a hair under 1 psi higher). Airflow peaks were 54.3 lb/min (FP2) and 51.2 lb/min (280). Airflow/rev was higher across the board with the FP2s even to redline. Both cams were installed on stock cam gears and base timing was 5* in both these logs.

When I go back to the FP2's, I'll do another comparison log to see if it was something else that changed with the car, but I can't imagine that's what it is. Yes I know I have the stock 1g intake manifold, but this still shouldn't have happened.

<b>Logs attached. 8222007 file is FP2 cams, 8262007 file is BC 280s.</b>

 

[blcknspo0ln]

Attach it in advanced > like you're adding a photo, except choose the .dat file.

 

[eclipsegsx1736]

Attach it in advanced > like you're adding a photo, except choose the .dat file.

Thanks, post updated with logs!

 

[clipise]

Whats your guy's vaccum at idle with the 280's?

 

[eclipsegsx1736]

I think I'm pulling about -10 vac with idle set to 1050 rpm. BTW did some pulls at only ~16 psi and airflow/rev still falls off up top. I'm really looking forward to when I can put my old FP2s back in.

 

[Turbo Monk3y]

I think I'm pulling about -10 vac with idle set to 1050 rpm. BTW did some pulls at only ~16 psi and airflow/rev still falls off up top. I'm really looking forward to when I can put my old FP2s back in.

ummmm you have a 1g intake manifold, you could have .550 lift cams and still fall off up top with that intake manifold... my fp2s ran well up to 8700 with out ever showing a sign of drop off with my magnus. With my 1g It flat lined @ 6700rpms and started to fall by 7800. Get a 1g head and a Magnus, or JMF and then youll notice a crazy pull up top with the 280s...

 

[droppinbottom]

I am probably going at this all wrong with my setup .

I am still on the eIII and stock IM, I put in my 280's about 2 weeks ago and so far here is what I have noticed. Keep in mind I went from stock cams to these and have never had any other kind of cams.

Idle is fine 1150. No low end power untill above 3k. Pulls very smooth to 8k. My spool is now slower but very smooth. I do notice a surge from time to time while crusing at low rpm. I try to keep rpms above 2500 mainly due to vibrations from my motor mounts but I have also noticed I dont get much surge above that rpm.

I have logs of the car at the track and will have my dyno charts emailed to me in the next day or so. I did not make much more peak power on my setup than with stock cams but I do make power longer with this setup.

 

[blcknspo0ln]

Anyone notice any problems with braking (i.e., the brake booster isn't getting enough vacuum?)

 

[marcmsj]

Anyone notice any problems with braking (i.e., the brake booster isn't getting enough vacuum?)

I think as long as you leave it in gear while breaking, then you shouldn't notice any difference since you'll have a lot more vacuum than throwing it in neutral and braking.

 

[turbo addict]

On a related note, is anyone using the BC 288s, BC103s?? impressions??

 

[clipise]

Anyone notice any problems with braking (i.e., the brake booster isn't getting enough vacuum?)

Yes. I have.


My vaccum at idle is also at -5.

I have these cams w/ the BC springs and retainers. I also have the JMF race intake manifold.



Any ideas?

 

[jo1]

my vacum idle is at 10hg and low end is suck... after retarding one tooth of the intake cam the vacum is at 15hg and the low end seem a lot better with faster spool up.. there is no different with the top end.

Just the sound is not meaner anymore at idle

 

[2gAWDTalon]

On a related note, is anyone using the BC 288s, BC103s?? impressions??

I am waiting on them... Dustin at BC told me 4 weeks from today.

 

[droppinbottom]

My vaccume is at about -11hg while at idle. I do have my idle set to 1150 though. It does stumble from time to time at low rp range but as long as you keep them above 2200 it is all good.

 

[sbcxtreme]

I am waiting on them... Dustin at BC told me 4 weeks from today.

What is the powerband supposed to be like with the 288's? 4k-11k?

 

[CPHunter]

so would it be worth it to ever get FP3 cams, or do the same apply? are these BC cams just not worth getting in general 264,272,280?

 

[2gAWDTalon]

What is the powerband supposed to be like with the 288's? 4k-11k?

I dunno, They told me with the right setup you should pick up some good power 7K and above... who cares how the bottome end is... if your running cams like these your turbo probley dosent spool up untill after 5-6K rpms anyways.

I had my 280's degreed in for my new motor, they were pretty far off. My block has been resurfaced, my head has been resurfaced and oringed and I have a stock mitsu composit head gasket in there. All that effects the degreeing of the cams...
Here is how far they were off, keep in mind each degree on the cam gear is 2 crank degrees:

You must be logged in to view this image or video.

 

[black-dsm]

I dunno, They told me with the right setup you should pick up some good power 7K and above... who cares how the bottome end is... if your running cams like these your turbo probley dosent spool up untill after 5-6K rpms anyways.

I had my 280's degreed in for my new motor, they were pretty far off. My block has been resurfaced, my head has been resurfaced and oringed and I have a stock mitsu composit head gasket in there. All that effects the degreeing of the cams...
Here is how far they were off, keep in mind each degree on the cam gear is 2 crank degrees:

I would like to degree mine as well. What type of lifters you used to degreed the cams hydraulic or the ajustable ones? Also when you degree the cams for what degree numbers I need to adjust the cams? Thanks

 

[2gAWDTalon]

I would like to degree mine as well. What type of lifters you used to degreed the cams hydraulic or the ajustable ones? Also when you degree the cams for what degree numbers I need to adjust the cams? Thanks

You need to use solid lifters to degree them in. You can buy a set of 16 or you can just weld up a couple of old stock lifters to make them solid. After that with some other equipment you use the cam card to adjust them to spec. This is not a task for a novice mechanic.
BLK DSM Where are you in FL? There is a local to me that does the best work... Jose C.

 

[civic619]

I need some advice before I spend some money on Cams. The BC 272 and 280 are the ones I have my eyes on because of the great reviews and the unbeatable price.

My current setup is listed in my sig (Crank is knifedge, blue printed and balanced). So my questions are:

- Would 280's be a bit overkill for my 50 Trim?

- I am running crower dual valve springs, titanium retainers and crower 1mm oversized valves. Would the 280's becompatible with my valve train setup?

- Would my fuel economy go down significantly with aftermarket cams?

- What would be the highest I could rev on the 272's and 280's considering my setup?

- Are the 280's streetable? My car is a daily driver so I wouldn't want to deal with stalling issues.

- How much HP can I expect to gain from either of these cams?


I really appreciate your input guys!

 

[sbcxtreme]

- Are the 280's streetable? My car is a daily driver so I wouldn't want to deal with stalling issues.

I have not had an issue with the 280's creating a stalling problem, but for a daily driver, i would definately go with the 272's. The 280's kind of take the fun out of street use.

If you dont have an smim, or plan on getting one, the 280's are not for you.