Disappointing results with TFS Heads
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Joined: Jul 2003
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From: Ankeny, IA
I would love to keep this cam. I love the sound of it. Add to that I'm not looking forward to another cam swap 
I think at this point I am going to A) gets some HPTuner logs with my current setup and B) replace the existing rockers with some HS rockers and log it again. Seems the cheapest part to swap and test.
I think at this point I am going to A) gets some HPTuner logs with my current setup and B) replace the existing rockers with some HS rockers and log it again. Seems the cheapest part to swap and test.
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From: Ankeny, IA
Originally Posted by NEVRLIFT
I don' think that the cam is the problem. All of Futural's cams have been proven to make power. The overlap on that cam isn't anywhere near what I've seen on many people's cams in here. It's actually pretty mild.
Question: Would the fact that he has no advance on a 112LSA cam have anything to do with this?
Question: Would the fact that he has no advance on a 112LSA cam have anything to do with this?
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really got some track times to prove that or is this just dyno racing ?
Originally Posted by NEVRLIFT
I don' think that the cam is the problem. All of Futural's cams have been proven to make power. The overlap on that cam isn't anywhere near what I've seen on many people's cams in here. It's actually pretty mild.
Question: Would the fact that he has no advance on a 112LSA cam have anything to do with this?
Question: Would the fact that he has no advance on a 112LSA cam have anything to do with this?
Originally Posted by LS1curious
To much overlap in the camshaft. It'll kill Tq and HP with a head that efficient.
Originally Posted by LS1curious
i was specifically adressing your issue. You have to much overlap in that camshaft.
Originally Posted by LS1curious
I wouldn't be willing to put my name on it or anything but i would be willing to bet it a 114 would be a fiarly large improvment. Overlap can cuase the intake runners to back up with exhuast at moderate RPM if the exhuast is to restrictive.
Originally Posted by LS1curious
You would have to run a open header with a tunned primary and collector to make an overlap cycle that long work.
Swapping over to a 114 from the 112 he has now isnt going to change much at all, definately nothing significant. Honestly, it seems to me your just tryn to sound smart with your assumptions.
I'm not saying I'm an expert on camshafts, but I'm not in here spouting off mis-information and pointing a guy in the wrong direction either. I'm sure the cam pros will be in here soon to back me up on these statements.
Originally Posted by BriancWS6
Are you a dumbass? I completely disagree with about everything you've said. The F13 has been used successfully in MANY heads/cam setups using great heads. The overlap of his cam is nothing significant at all. What would you say to the guys with MS3/4s, Trexs, and other cams with much more overlap than his F13 at only 7 degrees? Do you even know how to calculate overlap?
Swapping over to a 114 from the 112 he has now isnt going to change much at all, definately nothing significant. Honestly, it seems to me your just tryn to sound smart with your assumptions.
I'm not saying I'm an expert on camshafts, but I'm not in here spouting off mis-information and pointing a guy in the wrong direction either. I'm sure the cam pros will be in here soon to back me up on these statements.
Swapping over to a 114 from the 112 he has now isnt going to change much at all, definately nothing significant. Honestly, it seems to me your just tryn to sound smart with your assumptions.
I'm not saying I'm an expert on camshafts, but I'm not in here spouting off mis-information and pointing a guy in the wrong direction either. I'm sure the cam pros will be in here soon to back me up on these statements.
Originally Posted by BriancWS6
Are you a dumbass? I completely disagree with about everything you've said. The F13 has been used successfully in MANY heads/cam setups using great heads. The overlap of his cam is nothing significant at all. What would you say to the guys with MS3/4s, Trexs, and other cams with much more overlap than his F13 at only 7 degrees? Do you even know how to calculate overlap?
Swapping over to a 114 from the 112 he has now isnt going to change much at all, definately nothing significant. Honestly, it seems to me your just tryn to sound smart with your assumptions.
I'm not saying I'm an expert on camshafts, but I'm not in here spouting off mis-information and pointing a guy in the wrong direction either. I'm sure the cam pros will be in here soon to back me up on these statements.
Swapping over to a 114 from the 112 he has now isnt going to change much at all, definately nothing significant. Honestly, it seems to me your just tryn to sound smart with your assumptions.
I'm not saying I'm an expert on camshafts, but I'm not in here spouting off mis-information and pointing a guy in the wrong direction either. I'm sure the cam pros will be in here soon to back me up on these statements.
x2
What do you know about 23.5 degree's of overlap(my cam) ?
What is the preload on the lifters Joel? Did you measure the pushrod length with a solid lifter? To much preload could keep the valves from closing completely loosing compression.
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Your a dumbass. Show me the Money with that camshaft ? show me the money ? whats do those cars run ? Yes overlap can kill power IF its excessive. Adding a set of quality heads to a camshaft like this one could easily push it into heavy reversion when the exhuast backs up at 3000-4000rpm.
where are you comming up with 7 degrees ? at what .050 ? hell thats not all the overlap in that camshaft.
but hey since a few guys here know everything about camshafts why argue ?
where are you comming up with 7 degrees ? at what .050 ? hell thats not all the overlap in that camshaft.
but hey since a few guys here know everything about camshafts why argue ?
Originally Posted by BriancWS6
Are you a dumbass? I completely disagree with about everything you've said. The F13 has been used successfully in MANY heads/cam setups using great heads. The overlap of his cam is nothing significant at all. What would you say to the guys with MS3/4s, Trexs, and other cams with much more overlap than his F13 at only 7 degrees? Do you even know how to calculate overlap?
Swapping over to a 114 from the 112 he has now isnt going to change much at all, definately nothing significant. Honestly, it seems to me your just tryn to sound smart with your assumptions.
I'm not saying I'm an expert on camshafts, but I'm not in here spouting off mis-information and pointing a guy in the wrong direction either. I'm sure the cam pros will be in here soon to back me up on these statements.
Swapping over to a 114 from the 112 he has now isnt going to change much at all, definately nothing significant. Honestly, it seems to me your just tryn to sound smart with your assumptions.
I'm not saying I'm an expert on camshafts, but I'm not in here spouting off mis-information and pointing a guy in the wrong direction either. I'm sure the cam pros will be in here soon to back me up on these statements.
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From: Ankeny, IA
Originally Posted by slowride
What is the preload on the lifters Joel? Did you measure the pushrod length with a solid lifter? To much preload could keep the valves from closing completely loosing compression.
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From: ohio
Originally Posted by 99C5JA
Also the YT rockers when installed on the milled 241 heads used the supplied shims (I did this to restore the geometry with the hardened pushrods I had). I did not shim them when installing the TFS heads. Mike/Brian would I be better off at this point to shim the YT rockers and purchase the appropriate pushrods or get some Harland Sharp rockers?
I would try to shim them .020-.030" and see what happens.
Originally Posted by 99C5JA
I would love to keep this cam. I love the sound of it. Add to that I'm not looking forward to another cam swap
I think at this point I am going to A) gets some HPTuner logs with my current setup and B) replace the existing rockers with some HS rockers and log it again. Seems the cheapest part to swap and test.
I think at this point I am going to A) gets some HPTuner logs with my current setup and B) replace the existing rockers with some HS rockers and log it again. Seems the cheapest part to swap and test.
I have a set of used harlands you can borrow, if they work maybe we can work something out. If not all your out is shipping!
Call me or PM me. Thread Starter
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From: Ankeny, IA
Originally Posted by Mike@TEA
I would try to shim them .020-.030" and see what happens.
I have a set of used harlands you can borrow, if they work maybe we can work something out. If not all your out is shipping! Call me or PM me.
I have a set of used harlands you can borrow, if they work maybe we can work something out. If not all your out is shipping!
Call me or PM me.
One thing to consider is that your old heads could have been better than you thought.
Just a thought. Not saying that they are as good as the tfs heads, but when done correctly, stock casting heads can be very, very good.
Just a thought. Not saying that they are as good as the tfs heads, but when done correctly, stock casting heads can be very, very good.
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From: Ankeny, IA
Yeah, the old heads were obviously pretty good. But even the 241 castings with the F13 should have made more power (I mistakenly thought the heads were the bottleneck). The TFS heads flow a fair amount more if you trust both heads flow sheet and should pickup more than they did. Hopefully I can figure out what is causing this.
Originally Posted by LS1curious
Im a dumbass. thats not all the overlap in that camshaft.
hope you get it figured out man, there's definately more power to be had from a setup like yours
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Before you spend anymore money.drop the exhuast and redyno the car I'd bet it picks up a bunch of power.
Originally Posted by 99C5JA
I would love to keep this cam. I love the sound of it. Add to that I'm not looking forward to another cam swap
I think at this point I am going to A) gets some HPTuner logs with my current setup and B) replace the existing rockers with some HS rockers and log it again. Seems the cheapest part to swap and test.
I think at this point I am going to A) gets some HPTuner logs with my current setup and B) replace the existing rockers with some HS rockers and log it again. Seems the cheapest part to swap and test.
On The Tree
Joined: Nov 2005
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Originally Posted by LS1curious
Before you spend anymore money.drop the exhuast and redyno the car I'd bet it picks up a bunch of power.
Corvette's don't loose much at his level due to exhaust.. Stock ti ZO6 exhaust(chambered) had made over 500whp on an agressive 347 setup. His Corsa is stright through so I don't see a problem with it.
Engine's running ok correct Joel? No excessive oil consumption or smoke? If it comes to it I have some stock lifters laying around you can have to make a solid set.
Engine's running ok correct Joel? No excessive oil consumption or smoke? If it comes to it I have some stock lifters laying around you can have to make a solid set.
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From: Ankeny, IA
Originally Posted by LS1curious
Before you spend anymore money.drop the exhuast and redyno the car I'd bet it picks up a bunch of power.