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sr16 cams are only 10-12 hp gain at the wheels. be careful about wanting these for street driving though. the low revs and mid revs are sacrificed for the top end gain. the small cam profiles are much smaller than the sr20ve cams. torque is also compromised. so its a trade off. hope this helps. i read somewhere in here about predicted hp gains being 15-18whp this just isn't true. why is my vvl making 10-12 more hp than the rest of the sr20ve's.......hmmm????
Ditto here, is it possible the exhaust caused the loss in low end? (ie too big diameter?) I know you posted you had 'race' only ECU, is it possible it didn't like the exhaust either?
Edit: EEEKKKKKKKK!!!!!!
Just pulled these numbers off Bubba's NX site
Scanned from Japanese FSM
Intake Cam
SR16VE Low lobe 7.1mm lift @ 200 duration High 11.1 lift @ 280
SR20VE Low lobe 8.4mm lift @ 220 duration High 10.7 lift @ 264
Exhaust Cam
SR16VE Low 7.95 mm @ 244 High 11.1 @ 280
SR20VE Low 6.6 mm @ 244 High 10.34 @ 268
So SR16VE Intake Cams are 1.3mm less lift and 20 degrees duration as compared to SR20VE Cams
But SR16VE Exhaust are 1.35mm more lift same duration
Big lobes Intake SR16 .3mm and 16 duration more
Exhaust SR16 .76mm and 12 duration more
My head hurts!!!
Originally posted by skyliner Ditto here, is it possible the exhaust caused the loss in low end? (ie too big diameter?) I know you posted you had 'race' only ECU, is it possible it didn't like the exhaust either?
Edit: EEEKKKKKKKK!!!!!!
Just pulled these numbers off Bubba's NX site
Scanned from Japanese FSM
Intake Cam
SR16VE Low lobe 7.1mm lift @ 200 duration High 11.1 lift @ 280
SR20VE Low lobe 8.4mm lift @ 220 duration High 10.7 lift @ 264
Exhaust Cam
SR16VE Low 7.95 mm @ 244 High 11.1 @ 280
SR20VE Low 6.6 mm @ 244 High 10.34 @ 268
So SR16VE Intake Cams are 1.3mm less lift and 20 degrees duration as compared to SR20VE Cams
But SR16VE Exhaust are 1.35mm more lift same duration
Big lobes Intake SR16 .3mm and 16 duration more
Exhaust SR16 .76mm and 12 duration more
My head hurts!!!
Well that would allow for better idling, less power loss due to blowby (not correct term for this, but scavenging when you dont need it)
So it would be good for those highway runs like 60-100 pulls, but will still have lots of grunt off the line.
__________________ KL0 P11 Sport
VE, JWT Pop Charger, Carbing: Tri-FSTB RSTB LCA Bar, SS Autochrome Header, Greddy Evo, Rear sway bar
------------ Surround Sound My VE thread
Originally posted by bigtom sr16 cams are only 10-12 hp gain at the wheels. be careful about wanting these for street driving though. the low revs and mid revs are sacrificed for the top end gain. the small cam profiles are much smaller than the sr20ve cams. torque is also compromised. so its a trade off. hope this helps. i read somewhere in here about predicted hp gains being 15-18whp this just isn't true. why is my vvl making 10-12 more hp than the rest of the sr20ve's.......hmmm????
Tom:
Now that we know you're using the SR16VE cams, how high are you revving that bad boy?
Originally posted by bigtom sr16 cams are only 10-12 hp gain at the wheels. be careful about wanting these for street driving though. the low revs and mid revs are sacrificed for the top end gain. the small cam profiles are much smaller than the sr20ve cams
10-12 whp isn't exactly small. Let's see from what I can tell you put the sr16 cams and a new ecu in your car. You droped the ET from 13.2 down to 12.8. Not bad for 2 modifications (correct me if I am wrong because this is just a guess). I really wish you would post the dyno charts. If you can't I am sure someone would help.
those weren't the only changes. and my fastest time stock was 13.1. i can give you the info i give you. when im ready to post my current dyno sheets i will likely be making more power by then. any info that is pertinent to street driving. but im building a race car. if you would like to compete with me on that level then by all means go firgure it all out by your own self. and see ya at the track. those of you who know me know i mean no disrepect. this is just how it is.
Originally posted by bigtom but im building a race car. if you would like to compete with me on that level then by all means go firgure it all out by your own self. and see ya at the track. those of you who know me know i mean no disrepect. this is just how it is.
You stated you would post the exact dyno #'s in this thread. Competing? In the search for information that is all. This is a public forum. People post, others respond, ask questions, answer questions, you get the idea. Not your game. Oh well.
i post plenty of information that has been helpful to people on this forum. but it seems that people like you just want to get a bunch of free information without spending endless amounts of time and money that it takes. im sure a lot of people can respect that. the dyno statement was made in another thread, but that really doesn't matter. i have helped a lot of people with their ve questions. i am going to post the dyno numbers in an organized comparative fashion when i get to it.
how high you can rev a ve depends a lot on if you started with a sr20 or sr16. the valvetrain is different. we blew up an sr20ve the oher day over-revving it. 7800 seems to be the limit for a sr20ve head. exhaust valves hit the pistons revving close to 8500. if you want to go higher buy some valve springs, but there no power that high anyway.
Originally posted by bigtom but it seems that people like you just want to get a bunch of free information without spending endless amounts of time and money that it takes
The only thing (that I can remember) I have asked you for was a dyno chart and part #'s. You turned me down on the part numbers and I didn't make a big deal about it. The dyno chart was requested to back up your previous statement about sr16 cams losing a lot of low-end power. That is subjective. A dyno chart makes it objective. Like I said in my PM to you. No big deal. Post the dyno when you want. Just don't act surprised to be questioned about a subjective statement in a post. That's what happens on a forum. I thought a forum is all about free information. It's not like I am calling a shop and asking for free advice. In fact, I went with Brian at Courtesy for the parts because of how helpful he has been in the past. Shops benifit from the exchange of information. It builds good will.
Originally posted by bigtom but it seems that people like you just want to get a bunch of free information without spending endless amounts of time and money that it takes. im sure a lot of people can respect that.
I was going to let the personal part go but now I can't. You know nothing about me. I have done plenty of development work on my car.
I was the first person to put Koni's on a B14. Worked Directly with Lee Grimes of Koni USA to do it. As you know installing Koni's requires destroying your OEM struts. If they didn't work it would have been on me. I have been instrumental in developing the "fastbrakes" Wilwood kits for our cars. Currently, still working on the 11X.9 inch rotor kit to fit behind stock B14 wheels. I have had those brakes on and off my car so many times I can't even guess. Put a group buy together and got people excellent brakes for a really good price. If your shop ever sells a fastbrakes kit and it fits behind the stock b14 wheels it was because of me. Ask Nismo91 if all I want is "free information". He was going to sell his car until he talked to me and I helped him fix it. Ask "Peanuthead" the same question. Both these people were essentially strangers to me (except we talked on the forum and Dyno Day with Peanuthead) when I helped them out of a big problem. Nismo91 offered to pay. Refused. That is only over the last 6 months. Sorry to Nismo91 and Peanuthead for naming names.
I don't have a shop to catch me when I need help. I am on my own. And, I thank God for a Forum like this that will help catch me when I need help. That is what all of this is forum stuff is about.
In fact, I went with Brian at Courtesy for the parts because of how helpful he has been in the past. Shops benifit from the exchange of information. It builds good will.
Steve
Would you be willing to share any new part numbers you have so I can post them to the FAQ??
__________________
Chuck Nibbana
Retired VE owner
Forever an SE-R owner at heart
2005 BMW M3
Would you be willing to share any new part numbers you have so I can post them to the FAQ??
I havn't gotten any part numbers yet. That is still the hang-up. As soon as I get some I will. I will post the prices that bigtom just gave me in that thread now. I was referring to my original choice to use him.
Originally posted by skyliner Ditto here, is it possible the exhaust caused the loss in low end? (ie too big diameter?) I know you posted you had 'race' only ECU, is it possible it didn't like the exhaust either?
Edit: EEEKKKKKKKK!!!!!!
Just pulled these numbers off Bubba's NX site
Scanned from Japanese FSM
Intake Cam
SR16VE Low lobe 7.1mm lift @ 200 duration High 11.1 lift @ 280
SR20VE Low lobe 8.4mm lift @ 220 duration High 10.7 lift @ 264
Exhaust Cam
SR16VE Low 7.95 mm @ 244 High 11.1 @ 280
SR20VE Low 6.6 mm @ 244 High 10.34 @ 268
So SR16VE Intake Cams are 1.3mm less lift and 20 degrees duration as compared to SR20VE Cams
But SR16VE Exhaust are 1.35mm more lift same duration
Big lobes Intake SR16 .3mm and 16 duration more
Exhaust SR16 .76mm and 12 duration more
My head hurts!!!
talk englash mang...
__________________
The classic feels left out cause of the attention the Evo is getting.
Although, I talk to it and let her know that she is still my number 1
Hey Big Tom,
I am in Korea now for the world Cup. I may stop by Japan to have a look around. I have a few friends that live over there. Do you have any contacts on where to look around for engines? My friends in Japan are doing some snooping around before I arrive. You can email me privately.
-Linus
__________________ VVL
'94 SE-R w/ VE ....sale pending "Relax, alright? My old man is a television repairman, he's got this ultimate set of tools. I CAN FIX IT."
