Weasy's Cams for 3vze.
04-23-2007, 07:03 PM
#81
Registered User
Bumpin
There is no electronic Idle up control in the 3vz-e's it actually replys on your coolant temp alone which changes the amount of airflow that goes into the engine. Im unsure as to why it would drop so much...except i would check your IGN timing to make sure its bang on or else it will affect it a bit (i noticed that on my test 4runner here which is auto as well was off by 2 deg retard and it lugged at idle). Also is the idle adjustment screw in place properly? Tim moved his out just a wee bit and it is sitting alot nicer now. 7.3L...what a waste of DSL
There is no electronic Idle up control in the 3vz-e's it actually replys on your coolant temp alone which changes the amount of airflow that goes into the engine. Im unsure as to why it would drop so much...except i would check your IGN timing to make sure its bang on or else it will affect it a bit (i noticed that on my test 4runner here which is auto as well was off by 2 deg retard and it lugged at idle). Also is the idle adjustment screw in place properly? Tim moved his out just a wee bit and it is sitting alot nicer now. 7.3L...what a waste of DSL
The 7.3 race was a 1st gear race into a single merged lane so we had about 200 yards to rock..since the guy didnt know what brake boosting was, I waxed his ass....now if he had brake boosted to 15+psi and been in 4x4, I'da been toast off of the line...lol
Glad you are enjoying the cams guys! Want a supercharger?
or a turbo kit - less stress on the engine!
Last edited by Bumpin' Yota; 04-23-2007 at 07:05 PM.
04-23-2007, 07:33 PM
#83
Registered User
The turbocharged engine has to work far less to achieve X hp compared to the same engine with a supercharger making the same hp. The efficiency numbers dont lie
Now if you thought NA compared to FI, then duh FI is more stressful...I was merely comparing methods of FI
Last edited by Bumpin' Yota; 04-23-2007 at 07:37 PM.
04-23-2007, 10:34 PM
#85
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Yes, a turbo is more efficient, but it does NOT put less stress on a motor than a supercharger. Turbos run MUCH hotter (stress) & you have to spin the engine higher to get that HP (mores stress again)...
SCs have power available at just above idle and run out of steam earlier...it's a tradeoff, but a much more reliable tradeoff that you don't have to work so hard for.
Sorry for the thread hijack, Weasy!
SCs have power available at just above idle and run out of steam earlier...it's a tradeoff, but a much more reliable tradeoff that you don't have to work so hard for.
Sorry for the thread hijack, Weasy!
04-23-2007, 11:00 PM
#86
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that's not inherently true..
turbo's do create heat....BUT, they run off of expelled gases..that don't add much load onto the engine. they do work WAY more efficently than a belt driven s/c...and that alone takes more stress out of it, in comparison.
also, a turbo setup is much easier to intercool....and you can also NOT have boost, part throttle ftw! a s/c is hard to intercool, and you ALWASY have boost if you have RPM...even under low load.
turbo's do create heat....BUT, they run off of expelled gases..that don't add much load onto the engine. they do work WAY more efficently than a belt driven s/c...and that alone takes more stress out of it, in comparison.
also, a turbo setup is much easier to intercool....and you can also NOT have boost, part throttle ftw! a s/c is hard to intercool, and you ALWASY have boost if you have RPM...even under low load.
04-24-2007, 04:28 AM
#87
Registered User
Yes, a turbo is more efficient, but it does NOT put less stress on a motor than a supercharger. Turbos run MUCH hotter (stress) & you have to spin the engine higher to get that HP (mores stress again)...
SCs have power available at just above idle and run out of steam earlier...it's a tradeoff, but a much more reliable tradeoff that you don't have to work so hard for.
Sorry for the thread hijack, Weasy!
SCs have power available at just above idle and run out of steam earlier...it's a tradeoff, but a much more reliable tradeoff that you don't have to work so hard for.
Sorry for the thread hijack, Weasy!
Why do I say, and continue to stand by the statement that a supercharged engine is under more stress to achieve X hp than a conventionaly turboed engine making the same hp?
All you have to do is look at the hp required to drive the forced induction device. (i've personally crunched the numbers about a dozen times for a turboed 3vze.) A T04e-50 turbo with a T3 0.69AR hotside will use roughly 5 hp to build 15psi of boost which should make 250-260hp. A supercharger on the same engine should take over 30hp to drive to make the same 250-260hp.....
that means to make 250 crank hp, the turbocharged engine must make 255hp and the supercharged engine must make 280hp. You tell me which has 10% more stress just to achieve 250 crank horse power....
ps - And I can state with certanty that you WILL have boost under partial throttle settings with a turbo. We have 3 turbo charged vehicles and all 3 of them develop some sort of boost when off of idle... Some are well over 15psi at partial throttle settings, others only 5. It depends on the setup, engines strength, and the load on the engine....
Last edited by Bumpin' Yota; 04-24-2007 at 04:31 AM.
04-24-2007, 07:03 AM
#89
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most centrifugal superchargers are just as easy to intercool as a turbo is, it's just a matter of running the charge pipes. If you pick your turbo carefully you can basically have it spool it up at any RPM you want, you'll just have less power on top if you have it spool off idle
05-23-2008, 07:48 PM
#91
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05-23-2008, 08:04 PM
#92
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pm weazy2k or go to www.sea2skytuning.com to order yours this is a very old thread and he might miss your post.
05-28-2008, 06:09 PM
#96
Contributing Member
another vote for weasy cams
these cams are fantastic. best mod for the 3vze. in fact, the 3vze big-3 is weasy cams, headers, and 2.25 exhaust. That's all the 3vze needs to become a much better motor.
The rest is icing on the cake, but these 3 are the most impt IMHO.
the cams give a lumpy idle which I did not understand at first but which I love now, sounds just great. a lot of people ask me what I've got in there. I tell them with pride and a straight face "its a V8' and they all believe it
one thing that I have noticed (which isn't a problem, but just wondering why), is that after stopping, the idle goes down to about 4-500RPM for a while, relaxing down there, then it pops back up to 800 where it stays. If I give it even a little bit of gas while down at 4-500, immediately back to 800.
never stalls, just curious as to why these cams might idle lower after returning to idle from highway driving etc.
The rest is icing on the cake, but these 3 are the most impt IMHO.
the cams give a lumpy idle which I did not understand at first but which I love now, sounds just great. a lot of people ask me what I've got in there. I tell them with pride and a straight face "its a V8' and they all believe it
one thing that I have noticed (which isn't a problem, but just wondering why), is that after stopping, the idle goes down to about 4-500RPM for a while, relaxing down there, then it pops back up to 800 where it stays. If I give it even a little bit of gas while down at 4-500, immediately back to 800.
never stalls, just curious as to why these cams might idle lower after returning to idle from highway driving etc.
05-29-2008, 09:45 PM
#97
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these cams are fantastic. best mod for the 3vze. in fact, the 3vze big-3 is weasy cams, headers, and 2.25 exhaust. That's all the 3vze needs to become a much better motor.
The rest is icing on the cake, but these 3 are the most impt IMHO.
the cams give a lumpy idle which I did not understand at first but which I love now, sounds just great. a lot of people ask me what I've got in there. I tell them with pride and a straight face "its a V8' and they all believe it
one thing that I have noticed (which isn't a problem, but just wondering why), is that after stopping, the idle goes down to about 4-500RPM for a while, relaxing down there, then it pops back up to 800 where it stays. If I give it even a little bit of gas while down at 4-500, immediately back to 800.
never stalls, just curious as to why these cams might idle lower after returning to idle from highway driving etc.
The rest is icing on the cake, but these 3 are the most impt IMHO.
the cams give a lumpy idle which I did not understand at first but which I love now, sounds just great. a lot of people ask me what I've got in there. I tell them with pride and a straight face "its a V8' and they all believe it
one thing that I have noticed (which isn't a problem, but just wondering why), is that after stopping, the idle goes down to about 4-500RPM for a while, relaxing down there, then it pops back up to 800 where it stays. If I give it even a little bit of gas while down at 4-500, immediately back to 800.
never stalls, just curious as to why these cams might idle lower after returning to idle from highway driving etc.
05-30-2008, 05:15 AM
#98
Registered User
i have the cams, os valves, pnp job on the top end and the grade 10.9 headbolts from engnbldr. Now that I retorqed the headbolts and reshimmed the cams, my truck is running better than it EVER has from the factory!! Adding the headers should + previous mods should yield 35+ rwhp!
Now all i need are the headers, but I think Im going turbocharged in the very near future...but damn its expensive
200 for the wide band
250 for the injector controller
30 for the weld els
200 for the ebay turbo
200 for the ignition retarding controller
100 for the piping and couplers
50 for the bov
50 for the wastegate
200 for the turbo back exhuast
and
150 for the welder from harbour freight tools! lol
Now all i need are the headers, but I think Im going turbocharged in the very near future...but damn its expensive
200 for the wide band
250 for the injector controller
30 for the weld els
200 for the ebay turbo
200 for the ignition retarding controller
100 for the piping and couplers
50 for the bov
50 for the wastegate
200 for the turbo back exhuast
and
150 for the welder from harbour freight tools! lol
Last edited by Bumpin' Yota; 05-30-2008 at 05:21 AM.
05-30-2008, 06:29 PM
#100
Registered User
drivers side just north of the steering linkage. doing this will require a custom fabb'ed turbo manifold. This has been sometihng ive been kicking around doing for a long long long time.
