A community of enthusiasts dedicated to Nissan's SR20DE/SR20VE/SR20DET engines.
Start here: forum search. Be sure to search on what you're looking for before posting a new thread.
You are currently browsing the forum as a guest. In order to access special features, the image gallery, and post you will need to be a registered member. Registration is fast, simple and absolutely free so please, join our community today!
If you have any problems with the registration process or your account login, please contact the administrator.
im putting a new head on my buddies sr20ve today. the last one bent a valve. not sure why yet. i think maybe because he missed a gear and over reved, but he says its not.
so with this setup, how high should he rev?
stock sr20ve bottom
head was done by big tom
- ported
-vavle job
-reshimmed
-resurfaced and cleaned
the head will have sr16ve cams, but still keep stock retainers and springs.
other mods are crap ebay header, and 3" exhuast after.
i will be tuning the car with afc and wideband after it runs for a few hundred easy miles.
the car has an sr16ve ecu in it, so it revs to 8200 easily, just not sure if it should be taken that high all the t ime
my thought..VEs suck..soooo you should just sell it to me reaaaaaaaally cheap lol sorry i had to try but im thinking you should post up some pictures of it. but as far as how high to rev i have no clue sorry i cant help
__________________
I Don't Need A Hybrid,If i Wanna Conserve Gas I'll Drive Slower.
Nissan Motorsports= Nismo ...So Honda Motorsports=Homo??
Quote:
Originally Posted by skyliner
I look at it this way. If I had a Type R, everytime I parked it I would fear it wouldn't be there when I got back. If I had(which I have 3) a B13, everytime I parked it I would fear it would be there when I got back
Whats your opinion on a Stock VE bottemend, Lightwight flywheel, N1 Cams S&R, No rev limit, Tuned ECU, full 3inch exhaust, SR20Turbofreak production headers, lightwhght pillies, and 3inch CAI or WAI would be guys? What would be HP numbers and RPM range.
I think that it will be fine at the stock rev limit the stock ecu comes with.If it was not safe to rev that high.I think nissan woudn't have the ecu allowing the engine to rev that high.
Dont listen to anyone on the USA about how high to rev the VE motor. The NZ and Australians take their stock VE's to 9500rpms all the time and they never bend valves. Just listen to them and your engine will run great. I'm completely convinced that I do not know anything about VE's or when valves bend from too many RPMs.
That's a little un-called for!
Let's keep our kicks above the waistline, please...
Very dissipointed in behaviour like this, from you!
I would have thought better of you?
Hwo or when did an aussie say that they rev their VE's to over 9000rpm on stock valvesprings...
Lol! "Don't drag us into this!"
SR16VE or not, they have the same valvetrain (with weaker springs) than the SR20VE. Your 8200rpm will be just fine. Drive it to where the power is.
I just find it funny how there's a whole group of kiwi's with engines that they push hard daily with stock valvetrain and no problems up against a couple of knowledgable Americans telling us we're all doomed, the eagle may be able to fly but kiwis dont get sucked into jet engines!
__________________
Anybody who cannot comprehend mathematics is not fully human. At best he is a tolerable subhuman who has learned to wash, cook food, and not make messes on the floor.
My friends had a bad experience of puting sr16ve cams into sr20ve and running it into n15 with stock sr16ve ecu (8200 rew limit). My friend misshifted from 3rd to 2nd gear. Valves were bended. Why? My opinion is only because of valve float on 8200.
__________________ Nissan Pulsar Gti-R'91 - under constuction (sr20vet in the garage)
My friends had a bad experience of puting sr16ve cams into sr20ve and running it into n15 with stock sr16ve ecu (8200 rew limit). My friend misshifted from 3rd to 2nd gear. Valves were bended. Why? My opinion is only because of valve float on 8200.
I don't believe that the higher than average rev limit of the ECU had anything to do with this particular instance.
When you 'miss-shift' the engine revs OVER the rev limiter, due to the physical speed of the engine due to the speed of the vehicle.
I agree. But the fact is, that nissans have a great reserve in reliability. That is why It worked till 8200. It worked good! It pulled very well! But it hadn't the revs reserve the stock engine has. I think that it had survived if the springs were sr16ve, not sr20ve p11.
Dont listen to anyone on the USA about how high to rev the VE motor. The NZ and Australians take their stock VE's to 9500rpms all the time and they never bend valves. Just listen to them and your engine will run great. I'm completely convinced that I do not know anything about VE's or when valves bend from too many RPMs.
What I think has happened is that the USA has upset Uri Geller.. he used to only concentrate on spoons but you naughty VE boys...
In all seriousness, when we are talking about a 9,500rpm rev limit on stock springs we are talking about engines with Franklin stage 4 cams & prepared SR16VE or N1 pistons. We do this because experience has shown you can get away with it & because S4s are designed to make power to 9,600rpm so the high rev limit is worthwhile.
If I was in your position, I would go with what Charles says and give yourself some breathing space. No point in revving your engine too high over where it makes power anyway.
No mention of ramp angles here...
SR20VE springs on SR16VE cams and 20,000miles of totally raped but reliable enjoyment...track work, drag racing 8500 REAL rpm limit...many individual engines are doing it...
__________________
HP11 VE - SOLD
BCNR33 GT-R - SOLD
HP12 20V family sedan.
S14 all motor track coupe in the pipeline
Clint. Stock sr20ve springs? or sr16ve? or stock sr16ve n1 springs?
Stock retainers of FC/aftermarket retainers?
Same as what Andy had in REVVVL, stock SR20VE springs & retainers.
When Adrian had N1 cams in this engine he used N1 S/R but I think they're actually softer than standard SR20VE items and not suitable for anything but the N1.
No expert on N1 stuff though so perhaps somebody else can confirm / deny.
lol sorry i had to try but im thinking you should post up some pictures of it. but as far as how high to rev i have no clue sorry i cant help 
Nissan Pulsar Gti-R'91 - under constuction (sr20vet in the garage)
