Re: N/a cams in a turbo(Timing)
i read the cams duration and all is the same NA and turbo. i know the turboA cams are 110 duration as apposed to Aspec turbo cams being 100[pretty sure]
i also would like to know if you notice anything with NA cams[have two sets out back and a head that is off the car and waitin to go on........easy swap
]
john
i read the cams duration and all is the same NA and turbo. i know the turboA cams are 110 duration as apposed to Aspec turbo cams being 100[pretty sure]
i also would like to know if you notice anything with NA cams[have two sets out back and a head that is off the car and waitin to go on........easy swap
]john
Re: N/a cams in a turbo(Timing)
lol. i was about to say the same type of thing squid.
something to the effect of:
"yeah. ask squid. the n/a cam on his turbo engine was a serious power increase! of course, he added a turbo the same time...."
yep.
::sigh:: whatever! i gotta bring my post count back up somehow... i was at exactly 2500
lol. i was about to say the same type of thing squid.
something to the effect of:
"yeah. ask squid. the n/a cam on his turbo engine was a serious power increase! of course, he added a turbo the same time...."
yep.
::sigh:: whatever! i gotta bring my post count back up somehow... i was at exactly 2500
Re: N/a cams in a turbo(Timing)
ok let me help:
the NA cams are a decent mod for low power 7ms... basically they give the turbo engine a NA powerband but keep a decent amount up top... so you gain about 5-10hp but the real "feeling" is more because it switches your powerband down low...
the bottom line is..this mod is good up to about 300-350hp 7m engines...after that you will be SEVERELY hindering your turbos potential and performance...
ok let me help:
the NA cams are a decent mod for low power 7ms... basically they give the turbo engine a NA powerband but keep a decent amount up top... so you gain about 5-10hp but the real "feeling" is more because it switches your powerband down low...
the bottom line is..this mod is good up to about 300-350hp 7m engines...after that you will be SEVERELY hindering your turbos potential and performance...
Re: N/a cams in a turbo(Timing)
did you read the thread about the Y pipe on the NA engine and how it achieves two peaks across it's powerband???
how does this apply with the cams. i thought the cams where the same and this was the differance in low and high end for the cars.
just asking, since i really don't know very much about this
also if i just pull the cams from my spare NA engine can i slap them right into the turbo head i have without any extra parts required??
john
did you read the thread about the Y pipe on the NA engine and how it achieves two peaks across it's powerband???
how does this apply with the cams. i thought the cams where the same and this was the differance in low and high end for the cars.
just asking, since i really don't know very much about this
also if i just pull the cams from my spare NA engine can i slap them right into the turbo head i have without any extra parts required??
john
I'm new here, and new to supras. I'm researching puting a 7mge into my toy truck. Since there's no archives, I get to ask a possibly dumb question...
I see it's desirable to swap the 7MGE camshafts into the 7MGTE. Is this because there's more duration on the 7MGE's, and you guys are looking for a setup that revs sky high?
If so, has anyone heard of making a low-rpm torque truck motor using 7MGE with turbo cams?
EDIT: Oh, and it's a 4x4 mountain climber, not a 2wd drag truck.
I see it's desirable to swap the 7MGE camshafts into the 7MGTE. Is this because there's more duration on the 7MGE's, and you guys are looking for a setup that revs sky high?
If so, has anyone heard of making a low-rpm torque truck motor using 7MGE with turbo cams?
EDIT: Oh, and it's a 4x4 mountain climber, not a 2wd drag truck.
i havent seen this mentioned in here, it's not BOTH N/A cams that are supposed to be put in the Turbo head, its just the intake cam. really, from everything i've read, it just moves the powerband a bit.
the cams really dont have a whole lot to do with our redline, thats more the crank. i'm sure the cams could take a crapload of revs, but the crank is our worry, if any. i'd say a 7m could rev to about 7k -7500k rpm safely, with stock internals. that is, of course, my opinion. (and we're limited to 6500 for pre 89 and 6250 for 89 + if i remember correctly)
-shaeff
the cams really dont have a whole lot to do with our redline, thats more the crank. i'm sure the cams could take a crapload of revs, but the crank is our worry, if any. i'd say a 7m could rev to about 7k -7500k rpm safely, with stock internals. that is, of course, my opinion. (and we're limited to 6500 for pre 89 and 6250 for 89 + if i remember correctly)
-shaeff
Shaeff: If you look at the graphs in the "Cams make a difference on the dyno" thread the stock cams seem to level off at around 5000 rpm while the aftermarket ones continue to make power!
I'm assuming he didn't change anything else related to the upper rpm limit other than the springs required for the new cams!
I always thought the crank was out limiting factor until I read the other thread!
I'm assuming he didn't change anything else related to the upper rpm limit other than the springs required for the new cams!
I always thought the crank was out limiting factor until I read the other thread!
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DEFIANT: OK, so there's quite a difference between the supra and cressida intake cams, and I think it tends to be the valve timing on the intake side that has greatest affect on power curve location. (quoting my old engine rebuilding professor) Closing 14 degrees early should be very significant. Are the cam specs you gave a comparison of turbo vs NA, or supra vs cressida?
SHAEFF: I didn't mean the NA cam would enable you to rev sky high. Just that it would extend the power curve when you're up beyond redline.
SHAEFF: I didn't mean the NA cam would enable you to rev sky high. Just that it would extend the power curve when you're up beyond redline.
IJ. said:
I believe one pull was with stock cams and the next with the aftermarket cams with both curves on the same sheet?
pic pinched from Manny's post (if this is a problem let me know)
pic pinched from Manny's post (if this is a problem let me know)
Ideal: You've lost me here!
I was pointing out to Shaeff that the stock cams level off at 5000 ish as he'd posted that he thought the limiting factor was the crank and stock cams would go higher....
I used Manny's results to illustrate this showing that stock stops making power at 5000 and aftermarket cams keep climbing.
I was pointing out to Shaeff that the stock cams level off at 5000 ish as he'd posted that he thought the limiting factor was the crank and stock cams would go higher....
I used Manny's results to illustrate this showing that stock stops making power at 5000 and aftermarket cams keep climbing.
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woah, i was on a completely different base than you... i was saying that the cams arent what limit the redline, im sure they could be spun higher, though i know the power levels off at about 5k. the crank is.
all i was saying was that if anything was a limiting factor in how high one could redline, it would be the crank, not the cams.
i see what you're sayin though. there's no reason to redline higher if you're leveled off in your power band/curve.
-shaeff
all i was saying was that if anything was a limiting factor in how high one could redline, it would be the crank, not the cams.
i see what you're sayin though. there's no reason to redline higher if you're leveled off in your power band/curve.
-shaeff
