Best Cam for my sr20 det :)

[Almasxxx]

My car setup

HKS Blow off Sqv3 (original)
HKS Mushroom filter (original)
XTD Stage 3 clutch brake
Walbro fuel pump
NGK Iridium IX Spark Plug BKR8EIX
Brain Crower titanium valve springs
ISS 264 degrees Brain Crower Stage 2
Greddy Cam Pulleys (nvcs cancel)
Ppr motorsports stage 4

1mm oversize titanium valves

Polish the top cover and throttle the suction port pprmotorsports.com
brain crower valve set
Godspeed torque damper
Fitted with dual fan radiator to be canceled Thermal
Elbow down the exhaust pipe, etc. complete system health Qpt 76mm
Gasoline Tomei regilatör
Cp 8.5 compression 86mm piston
Brain Crower I Beam piston rods
Acl race series bearings
1.4mm cometic Gasket
Darton Sleeves
Arp studs $

Megan Racing oil catch tank

hand-made turbo manifold Alexander

Tial wastegate v band model of the MR-S

14 liter intercooler kit

Pro Evo series sport EGT

AEM Wideband

stage 3 act clucth

my question
i changed turbo gt2876 r but
my question is whats the better for power respone with cams
i would like respone 4000 and 7900 rpm for thanks for helping

[s14unimog]

I'd say keep the 264's, get some adjustable gears and tune the over-lap. Shorten your charge pipes if you want to pick up some more response.

[Almasxxx]

I'd say keep the 264's, get some adjustable gears and tune the over-lap. Shorten your charge pipes if you want to pick up some more response.

Mate i have bc 264 cam but i dont do timing i have also greddy fmic set
can i buy mazworks timing disk for crank ?

[bradsm87]

The problem in you setup is the turbo 100%. Even the Garrett web site states that the GT2876R is "Not for general performance applications". The turbine is WAY too small for the compressor.

If you don't want to change to a T3 flanged manifold, your best option would be to get a GTX2867R with a .86 turbine housing.

[Def]

The GT2876R isn't that bad with a 0.64 A/R. I've had a T25, GT2560R, GT2876R .64 and a GT2871R .64. The 76 and 71 honestly aren't that different on spool up. Maybe 100-200 RPM I'd say, which you just don't feel on the street, or can even tell looking at the tach and boost gauge.

As for cams, keep the 264's, although I'd recommend some HKS, GReddy, or JWTs (S3's) in that duration. BC's are ground with majorly messed up lobe centers due to their Chinese quality control. The other cams I mentioned will make good power installed "straight up" with no cam gears.

[AsleepAltima]

i too am running the bc stage 2's, and im happy with them for now, but im looking to upgrade to the jwt s3's. ive read about too many people having great results and making good numbers with the s3's.

[TheRealSy90]

Don't be gay, get JWT S4's.

[Almasxxx]

Thanks guys i change jwt s4 or s3 but now which one better for me :D
And information for BC cam is making factory to Turkey in Konya ;)

[AsleepAltima]

the s3's are "drop-in" and the s4's are not. ive also heard that the s3's are better for turbos than the s4's are but since i dont run either, i cant actually confirm that. lol

[Almasxxx]

the s3's are "drop-in" and the s4's are not. ive also heard that the s3's are better for turbos than the s4's are but since i dont run either, i cant actually confirm that. lol

thanks dude for information can i give my order s3 now but whats difference for s3hl and s3 or s4hl and s4 thanks

[Almasxxx]

up whats difference high lifter ?

[steve shadows]

I suggest the HKS 264 Step 2 camshafts or you can go with HKS.

Another way to go is to go with an HKS 272 Intake and an HKS 264 step 2 exhaust camshaft. This will give you better mid-range and top end just make sure your valve springs are up to the challenge.

I standby HKS cams. The Brian Crowers do well when the head is ported and polished but otherwise I have always seen the HKS cams beat them out and beat out almost every other cam I have ever seen on SR motors. This comes totally from years and years of tuning and personally testing many different makes of cams on my own SR motors.

Thanks!

[slider2828]

Aww snap steve comes out of the shadows.....

Winter man winter!!! I have permission to build away.... New setup with the new GTX series and already have HKS 264/272 Step 2's on my hands.... Waiting to install...

Fresh rebuild too.....

[SlideOrDie831]

JWT S3 or S4

[Almasxxx]

JWT S3 or S4

which one betteR :)

[Almasxxx]

I suggest the HKS 264 Step 2 camshafts or you can go with HKS.

Another way to go is to go with an HKS 272 Intake and an HKS 264 step 2 exhaust camshaft. This will give you better mid-range and top end just make sure your valve springs are up to the challenge.

I standby HKS cams. The Brian Crowers do well when the head is ported and polished but otherwise I have always seen the HKS cams beat them out and beat out almost every other cam I have ever seen on SR motors. This comes totally from years and years of tuning and personally testing many different makes of cams on my own SR motors.

Thanks!
Dude
are you sure for intake 272 and exhaust 264 ??

[slider2828]

nah he reversed it.... 262/272.....

S3 for stock head s4 for upgraded head

[bradsm87]

The worst thing you can do to an engine that is already severely restricted on the exhaust side (All GT2876R powered cars are) would be to run a longer duration cam on the exhaust side compared to the intake side. The gas is just going to flow backwards and maybe all the way into the intake manifold during overlap for a good part of, if not all of the RPM range. Using a GT2876R .64, you should expect the exhaust manifold pressure to be about 3x the boost pressure at full noise. The .86 housing makes it a bit better but then response is even worse. A GTX2867R .86 will make more power than a GT2876R .64, come on to boost quicker and have only about 25% more pressure in the exhaust manifold compared to boost pressure up near redline. This allows you to harness the performance increase of advancing the intake cam, which will gain you low RPM power and response with probably no sacrifice whatsoever up high.

BC cams really are fine and the duration and lift you are running is good. I've heard (but never in hard facts) that the cam timing can be slightly out but no more out than any other engine with more than a few miles on it. What I'd be more concerned about is the effect the thicker head gasket has on cam timing.

If you're after better response, get a better turbo, get a thinner head gasket, 9:1 pistons or all of the above (8.5:1 pistons with a 1.4mm head gasket probably gets you about 8.3:1 which is far from ideal).

[Almasxxx]

thanks mate

[slider2828]

Get rid of those Brian Crower cams.... they are pretty terrible....

[codyace]

the s3's are "drop-in" and the s4's are not. ive also heard that the s3's are better for turbos than the s4's are but since i dont run either, i cant actually confirm that. lol

S4's are also drop in without modification, just like the S3

The S3 are better suited towards midrange response and the 28RS/2871. The S4 more towards the 30r or high spinning setups.

Either cam will work great, and better then anything else out there. No need to change springs, or anything...install them, and go crank the pig off 7850rpm all day.


thanks dude for information can i give my order s3 now but whats difference for s3hl and s3 or s4hl and s4 thanks

HL = High Lift. If you are buying them new, I'd get the HL cams. If you want used, be sure to also check the FWD forums too (SR20 Forum (http://www.sr20forum.com) and SR20 Community Forum - The Dash - Powered by vBulletin (http://www.sr20-forum.com))

I suggest the HKS 264 Step 2 camshafts or you can go with HKS.

Another way to go is to go with an HKS 272 Intake and an HKS 264 step 2 exhaust camshaft. This will give you better mid-range and top end just make sure your valve springs are up to the challenge.

I standby HKS cams. The Brian Crowers do well when the head is ported and polished but otherwise I have always seen the HKS cams beat them out and beat out almost every other cam I have ever seen on SR motors. This comes totally from years and years of tuning and personally testing many different makes of cams on my own SR motors.

Thanks!

Doesn't matter if the head was ported by Jesus,the BC cams suck. Zero QC. Go put some solid lifters in and degree a set...you'll be astonished at their shit QC ability. But hey, for 300 bucks the nitwits love them.

HKS is good, but I think we all know the JWT cam offerings have the paper proof of working the best. Issue is most cheapies skimp on them as they are 200 bucks more than the rest (even though those same cheapies are spending more in the end as they need springs).

Then again, we're the two most stubborn fanboys on here, so that's probably why we get along haha.

JWT Cams, the only way to fly.

[AsleepAltima]

S4's are also drop in without modification, just like the S3
noted!
im looking for s3's as we speak. even though my bc's are working very well, the numbers dont lie and i want s3's.

[TheRealSy90]

Just like CodyAce said, the S4's are drop in on a stock head no problem. I've been running S4 cams on a stock redtop head and beat the shit out of my rev limiter for 2 years and never had a problem. No stupid rocker arm stoppers either.

[1990 s13]

Just like CodyAce said, the S4's are drop in on a stock head no problem. I've been running S4 cams on a stock redtop head and beat the shit out of my rev limiter for 2 years and never had a problem. No stupid rocker arm stoppers either.\

really deng! i try not take my car passed 7200 but one time accidentally i took it too around 7700 maybe give or take and didnt redline!? idk if my car has cams or not it came with a heavy clutch who else knows what it has ;/

[di-devol]

Just for some reference I'm running a gt2876, tomei 256's 9:1, I get 19-20psi around 4200.

[cmg]

I didnt see anywhere in your mod list about aftermarket intake manifold. I have a greddy t517z. I had a little slower spool time after Greddy intake manifold install with bc 264's. Then changed my cams to Hks 264/272 setup and gained spool time back.

Moral of the story: Basically what everyone else said. Ditch the BC cams and get Hks/jwt/tomei pro cams.

[bradsm87]

I'm making 23psi at 3200 with 9:1 comp, 256 poncams and a GT2871R .86 currently on E85. It makes 385 horsepower at the wheels. The pump fuel tune makes 20psi at 3300rpm. It's a pretty good but not great turbo. I think GTX2867R or BorgWarner EFR 6258 would be better again but not enough of a change to justify the cost for me. I couldn't live with a GT2876R though. I'd change it as soon as I could.

Moral of the story: turbo selection is way, way more important than cam selection between similar duration cams from different manufacturers.

[ForeignMuscle]

I'm making 23psi at 3200 with 9:1 comp, 256 poncams and a GT2871R .86 currently on E85. It makes 385 horsepower at the wheels. The pump fuel tune makes 20psi at 3300rpm. It's a pretty good but not great turbo. I think GTX2867R or BorgWarner EFR 6258 would be better again but not enough of a change to justify the cost for me. I couldn't live with a GT2876R though. I'd change it as soon as I could.

Moral of the story: turbo selection is way, way more important than cam selection between similar duration cams from different manufacturers.

Man your hp seems way low. People are making more than 400whp with only 20psi on pump gas. Not to mention your compression is bumped up as well.. Who tuned your engine?

[di-devol]

I'm making 23psi at 3200 with 9:1 comp, 256 poncams and a GT2871R .86 currently on E85. It makes 385 horsepower at the wheels. The pump fuel tune makes 20psi at 3300rpm. It's a pretty good but not great turbo. I think GTX2867R or BorgWarner EFR 6258 would be better again but not enough of a change to justify the cost for me. I couldn't live with a GT2876R though. I'd change it as soon as I could.

Moral of the story: turbo selection is way, way more important than cam selection between similar duration cams from different manufacturers.

You're getting 20psi, on pump, at 3300 with a .86? Somehow I don't see that. Got a graph for that?

[Z33dori]

Anyone ever run Kelfords or GSC?

[slider2828]

I've heard kelfords are the shit, but I don't think anyone can afford running them. THey are pretty expensive aren't they?

[bradsm87]

Man your hp seems way low. People are making more than 400whp with only 20psi on pump gas. Not to mention your compression is bumped up as well.. Who tuned your engine?

I have heard Australian Dynos (Mainline and Dyno Dynamics brands) read a lot lower than the Mustang dynos in USA. 286 rear wheel kilowatts that ours makes is one of the highest known power outputs for a GT2871r 52T in Australia. Most make around 240-250 on 20psi with poncams.

[bradsm87]

You're getting 20psi, on pump, at 3300 with a .86? Somehow I don't see that. Got a graph for that?

I have moved interstate and all my printouts are interstate but I found this old dyno sheet that I posted online years ago. I've made a few changes since then but that one's on E50 fuel and has 23psi at 3400 with the .86 housing.

http://www.nissansilvia.com/forums/index.php?app=core&module=attach&section=attach&attach_rel_module=post&attach_id=280192

[2fo2929]

i need help i have bc 272 cam to put on my sr20 but can i live da stock springs n retainer...........?

[2fo2929]

............................leave...

[steve shadows]

264 Step 2 intake and exhaust with polished ports on the head. Done and Done. Literally have tuned setups to 350 whp on 14 psi with 2871R on dyno dynamics on 91 octane. that's around 400 whp on dynojet...all day yo! :2f2f:

[Z33dori]

I've heard kelfords are the shit, but I don't think anyone can afford running them. THey are pretty expensive aren't they?

not really, its just usually you have to order them, which seems to take forever

[2fo2929]

i also have a set of bc 264 cams i thing i will leave those.....

[90S13Pilot]

Tomei Poncams