IX Intake Cam more aggressive than VIII!
#1
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From: Toms River, NJ
IX Intake Cam more aggressive than VIII!
I posted this in the GSC cam thread as well, but I figured more people would see it here.
My brother has been searching for cams for his 1G DSM and he stumbled upon Brian Crower's new company (Crower's son), and he is developing cams for VIII and IX. Most interesting find was that the IX intake cam is actually more aggressive than the VIIIs. We already knew they were "different" in terms of being non-interchangeable however, I dont think many people knew it was actually more aggressive. News to me!
Here are the specs of both VIII and IX. Note: The IX and VIII exhaust cams are exactly the same.
VIII
Duration---- Duration@ .050 ------Lift (in)------ Lift (mm)
248°/248° -----200°/200° -------.386"/.367"-- --9.80/9.32
IX
256°/248° ----206°/200° ----.396"/.367"---- 10.05/9.32
As you can see the IX intake cam has MORE LIFT AND MORE DURATION! Just one more reason why IX's are making extra power!
My brother has been searching for cams for his 1G DSM and he stumbled upon Brian Crower's new company (Crower's son), and he is developing cams for VIII and IX. Most interesting find was that the IX intake cam is actually more aggressive than the VIIIs. We already knew they were "different" in terms of being non-interchangeable however, I dont think many people knew it was actually more aggressive. News to me!
Here are the specs of both VIII and IX. Note: The IX and VIII exhaust cams are exactly the same.
VIII
Duration---- Duration@ .050 ------Lift (in)------ Lift (mm)
248°/248° -----200°/200° -------.386"/.367"-- --9.80/9.32
IX
256°/248° ----206°/200° ----.396"/.367"---- 10.05/9.32
As you can see the IX intake cam has MORE LIFT AND MORE DURATION! Just one more reason why IX's are making extra power!
Last edited by Soon2BEVO; Sep 10, 2006 at 08:43 AM.
#2
It is nice that someone put up the specs! Thanks!
I have a noob question and hope I can get a quick answer. I have a HKS 272 exhaust cam with 20,000 miles on it that I pulled form my VIII. Should I put it in my IX and how much power with a tune could I expect? I thought I read that it would not make much power, I could be wrong.
Also is the exhaust cam the one with the cam angle sensor attached?
Thanks!
** You should update the stickey! PM the mod
I have a noob question and hope I can get a quick answer. I have a HKS 272 exhaust cam with 20,000 miles on it that I pulled form my VIII. Should I put it in my IX and how much power with a tune could I expect? I thought I read that it would not make much power, I could be wrong.
Also is the exhaust cam the one with the cam angle sensor attached?
Thanks!
** You should update the stickey! PM the mod
Last edited by Deepseadiver; Sep 10, 2006 at 09:33 AM.
#5
are those specs correct?
the sticky on this forum has different info for both duration and lift:
Factory EVO
Advertised Duration - 260 deg Int / 256 deg Exh
Effective Duration - ___ deg @ 1mm Int / ___ deg @1mm Exh
Lift - 10.0mm Int / 9.5mm Exh
Lobe Centerlines - 109 deg Int /111 deg Exh
LSA - 110 deg
Stock valve springs OK
JDM EVO MR
Advertised Duration - 260 deg Int / 256 deg Exh
Effective Duration - ___ deg @ 1mm Int / ___ deg @1mm Exh
Lift - 10.0mm Int / 9.5mm Exh
Lobe Centerlines - 113 deg Int /112 deg Exh
LSA - 112.5 deg
Stock valve springs OK
Factory EVO
Advertised Duration - 260 deg Int / 256 deg Exh
Effective Duration - ___ deg @ 1mm Int / ___ deg @1mm Exh
Lift - 10.0mm Int / 9.5mm Exh
Lobe Centerlines - 109 deg Int /111 deg Exh
LSA - 110 deg
Stock valve springs OK
JDM EVO MR
Advertised Duration - 260 deg Int / 256 deg Exh
Effective Duration - ___ deg @ 1mm Int / ___ deg @1mm Exh
Lift - 10.0mm Int / 9.5mm Exh
Lobe Centerlines - 113 deg Int /112 deg Exh
LSA - 112.5 deg
Stock valve springs OK
#6
I don't think you can use the same 272 cam from an 8 and put it in the 9. I think the 9 has it's on cam design an lift. I heard TTracing used 280s ex. for their nine testing and got some pretty good numbers.
#7
Originally Posted by Bo'sEvo8
I don't think you can use the same 272 cam from an 8 and put it in the 9. I think the 9 has it's on cam design an lift. I heard TTracing used 280s ex. for their nine testing and got some pretty good numbers.
That is why I asked, I think the intake cam is the different one.
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#8
Originally Posted by Soon2BEVO
VIII
Duration---- Duration@ .050 ------Lift (in)------ Lift (mm)
248°/248° -----200°/200° -------.386"/.367"-- --9.80/9.32
IX
256°/248° ----206°/200° ----.396"/.367"---- 10.05/9.32
Duration---- Duration@ .050 ------Lift (in)------ Lift (mm)
248°/248° -----200°/200° -------.386"/.367"-- --9.80/9.32
IX
256°/248° ----206°/200° ----.396"/.367"---- 10.05/9.32
#10
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From: Toms River, NJ
BTW, I think a lot of people have speculated where the extra power of the IX really comes from.
Ive seen some VERY impressive numbers for the IX dyno wise and track times, but Ive also seen a handful that were mediocre and VERY far from others.
Nonetheless, the added power from the IX comes from the larger compressor housing, the addition of MIVEC, a more aggressive intake cam and also revised coolant passages in the cylinder head. Who knows what other little things Mitsubishi did to improve upon the EVO... the thing is, Mitsubishi does not disclose everything. Did they ever mention revised intake cam or coolant passages? No, they said "larger turbo outlet" and the MIVEC, so immediately everyone attribute the 15-25HP extra over the 2005 VIIIs to both of those modifications. I think its a little bit of everything.
Im unsure how much power you will actually gain from upgrading to a 272 exhaust cam on an IX with the stock turbo. Probably something, but nothing crazy. Gains with a larger turbo would be much better.
Ive seen some VERY impressive numbers for the IX dyno wise and track times, but Ive also seen a handful that were mediocre and VERY far from others.
Nonetheless, the added power from the IX comes from the larger compressor housing, the addition of MIVEC, a more aggressive intake cam and also revised coolant passages in the cylinder head. Who knows what other little things Mitsubishi did to improve upon the EVO... the thing is, Mitsubishi does not disclose everything. Did they ever mention revised intake cam or coolant passages? No, they said "larger turbo outlet" and the MIVEC, so immediately everyone attribute the 15-25HP extra over the 2005 VIIIs to both of those modifications. I think its a little bit of everything.
Im unsure how much power you will actually gain from upgrading to a 272 exhaust cam on an IX with the stock turbo. Probably something, but nothing crazy. Gains with a larger turbo would be much better.
#11
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From: Toms River, NJ
Originally Posted by Bosshog
the sticky on this forum has different info for both duration and lift:
Factory EVO
Advertised Duration - 260 deg Int / 256 deg Exh
Effective Duration - ___ deg @ 1mm Int / ___ deg @1mm Exh
Lift - 10.0mm Int / 9.5mm Exh
Lobe Centerlines - 109 deg Int /111 deg Exh
LSA - 110 deg
Stock valve springs OK
JDM EVO MR
Advertised Duration - 260 deg Int / 256 deg Exh
Effective Duration - ___ deg @ 1mm Int / ___ deg @1mm Exh
Lift - 10.0mm Int / 9.5mm Exh
Lobe Centerlines - 113 deg Int /112 deg Exh
LSA - 112.5 deg
Stock valve springs OK
Factory EVO
Advertised Duration - 260 deg Int / 256 deg Exh
Effective Duration - ___ deg @ 1mm Int / ___ deg @1mm Exh
Lift - 10.0mm Int / 9.5mm Exh
Lobe Centerlines - 109 deg Int /111 deg Exh
LSA - 110 deg
Stock valve springs OK
JDM EVO MR
Advertised Duration - 260 deg Int / 256 deg Exh
Effective Duration - ___ deg @ 1mm Int / ___ deg @1mm Exh
Lift - 10.0mm Int / 9.5mm Exh
Lobe Centerlines - 113 deg Int /112 deg Exh
LSA - 112.5 deg
Stock valve springs OK
#12
Originally Posted by Soon2BEVO
BTW, I think a lot of people have speculated where the extra power of the IX really comes from.
Ive seen some VERY impressive numbers for the IX dyno wise and track times, but Ive also seen a handful that were mediocre and VERY far from others.
Nonetheless, the added power from the IX comes from the larger compressor housing, the addition of MIVEC, a more aggressive intake cam and also revised coolant passages in the cylinder head. Who knows what other little things Mitsubishi did to improve upon the EVO... the thing is, Mitsubishi does not disclose everything. Did they ever mention revised intake cam or coolant passages? No, they said "larger turbo outlet" and the MIVEC, so immediately everyone attribute the 15-25HP extra over the 2005 VIIIs to both of those modifications. I think its a little bit of everything.
Im unsure how much power you will actually gain from upgrading to a 272 exhaust cam on an IX with the stock turbo. Probably something, but nothing crazy. Gains with a larger turbo would be much better.
Ive seen some VERY impressive numbers for the IX dyno wise and track times, but Ive also seen a handful that were mediocre and VERY far from others.
Nonetheless, the added power from the IX comes from the larger compressor housing, the addition of MIVEC, a more aggressive intake cam and also revised coolant passages in the cylinder head. Who knows what other little things Mitsubishi did to improve upon the EVO... the thing is, Mitsubishi does not disclose everything. Did they ever mention revised intake cam or coolant passages? No, they said "larger turbo outlet" and the MIVEC, so immediately everyone attribute the 15-25HP extra over the 2005 VIIIs to both of those modifications. I think its a little bit of everything.
Im unsure how much power you will actually gain from upgrading to a 272 exhaust cam on an IX with the stock turbo. Probably something, but nothing crazy. Gains with a larger turbo would be much better.
#14
Originally Posted by EVIL_EVO_VIII
+1.. I agree that alot of the power on the IXs come from the turbo itself... Ive seen a IX turbo out of the car, and i must say, it is alot larger than the 05.. Ive seen a couple of 05 put a IX turbo on the forums on 91 oct, and have gotten some good gains, even better on 93 oct! IMO, if i had a IX, i would leave the intake cam stock and just do an exhaust cam.. Seems that alot of IXs using stock cams have made some good numbers than with the ones with both cams
#15
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Originally Posted by EVIL_EVO_VIII
+1.. I agree that alot of the power on the IXs come from the turbo itself... Ive seen a IX turbo out of the car, and i must say, it is alot larger than the 05.. Ive seen a couple of 05 put a IX turbo on the forums on 91 oct, and have gotten some good gains, even better on 93 oct! IMO, if i had a IX, i would leave the intake cam stock and just do an exhaust cam.. Seems that alot of IXs using stock cams have made some good numbers than with the ones with both cams