

Roller Camshaft Discussion - Data Collection
#1
Posted 02 November 2015 - 08:14 AM
I had to step away from this topic and the site for a week to clear my mind. It was obvious that I was leading this into a certain direction and I didn't want to start this into a huge argument. I was upset that someone popped up saying he knew all about this issue and never spoke up...although in some regards, I kind of expected this to happen. In all, I apologize for this and simply want to figure out a decent roller setup in an economical fashion.
I have what I believe is an Au roller rocker from a mid 90s Magna TS, it is part number MD106245. I bought this directly from Mitsubishi years ago when Tim was just experimenting with roller camshafts. I have yet to find a Magna TS parts manual and haven't been able to fully confirm it but found AU sites selling this P/N for the mid 90s Magna TR/TS application. I may be incorrect...if so, please correct me with factual proof (not meaning to be sarcastic, I honestly want to know). Anyways, I put this rocker arm on my setup shown in the other post and it contacted at the same spot as the v6 rocker, MD195450.
I am interested to know more of your thoughts on this topic. I'm interested in the numbers you are considering to offset the lobes to correct for the different contact point. I have a pretty good idea based on what I recorded over the past month...my setup is still intact in my garage and I could easily spin the engine to do a sanity check on the numbers. I'm also interested in knowing where you found a solid billet camshaft for this car.
Regards,
kev
#2
Posted 02 November 2015 - 09:57 AM
#3
Posted 02 November 2015 - 10:47 AM

But I'd want to reconfirm all of this with greater attention to the absolute center of peak lift on both lobes prior to developing a cam. When I took this data, I wasn't so concerned about the peaks but rather the overall profile including when the valves started to open/close.
I don't believe the grinder can compensate for this much of a difference on a regrind cam...would need a billet like you have found. But I didn't ask the question.
kev
#4
Posted 02 November 2015 - 10:57 AM
#5
Posted 02 November 2015 - 12:21 PM
#6
Posted 02 November 2015 - 12:30 PM

Red - AUS Roller Cam w/ AUS Roller Rockers
Black - Slipper Cam w/ AUS Roller Rockers
Yellow - AUS Roller Cam w/ V6 Roller Rockers
Teal - Slipper Cam w/ V6 Roller Rockers
#7
Posted 02 November 2015 - 01:20 PM
Been in discussion with rpw on their cams....they won't even provide camcard info. Too risky of a gamble for me
http://shop.rpw.com....ker-detail.html
#8
Posted 03 November 2015 - 12:58 AM
-Jarek
-Rides-
-1987 Starion -Midnight Star - FORD BARRA GTX4508r Build Progress see link
http://www.starquest...howtopic=152434
-1989 Chrysler Conquest-Track Beast Mode gtx3071r TBI 365hp 407tq @19psi/ 401hp 430tq @ 24psi sold
http://www.starquest...ic=151885&st=40
-1989 Pontiac Grand Prix Turbo SE- 3.1 gtx3582r getrag284 Tilton twin disc
-1991 Toyota Hilux Pickup 1uz itb cp pistons kelford cams TripleR head porting/ long tubes
-1986 AE86 20v.. 171hp@ 8200rpm
#9
Posted 03 November 2015 - 01:01 AM
-Rides-
-1987 Starion -Midnight Star - FORD BARRA GTX4508r Build Progress see link
http://www.starquest...howtopic=152434
-1989 Chrysler Conquest-Track Beast Mode gtx3071r TBI 365hp 407tq @19psi/ 401hp 430tq @ 24psi sold
http://www.starquest...ic=151885&st=40
-1989 Pontiac Grand Prix Turbo SE- 3.1 gtx3582r getrag284 Tilton twin disc
-1991 Toyota Hilux Pickup 1uz itb cp pistons kelford cams TripleR head porting/ long tubes
-1986 AE86 20v.. 171hp@ 8200rpm
#10
Posted 03 November 2015 - 10:09 AM
I can upgrade your Fuel Injection Pro firmware
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ECU Vendor link: http://www.starquest...howtopic=137426
#11
Posted 03 November 2015 - 10:31 AM
-Jarek
-Rides-
-1987 Starion -Midnight Star - FORD BARRA GTX4508r Build Progress see link
http://www.starquest...howtopic=152434
-1989 Chrysler Conquest-Track Beast Mode gtx3071r TBI 365hp 407tq @19psi/ 401hp 430tq @ 24psi sold
http://www.starquest...ic=151885&st=40
-1989 Pontiac Grand Prix Turbo SE- 3.1 gtx3582r getrag284 Tilton twin disc
-1991 Toyota Hilux Pickup 1uz itb cp pistons kelford cams TripleR head porting/ long tubes
-1986 AE86 20v.. 171hp@ 8200rpm
#12
Posted 03 November 2015 - 10:42 AM
I just want to know if the fundamental setup will work (cam profile, rocker arms, etc). The performance increase is secondary for me at this stage of the game.
I can't believe it is this difficult to find a functional roller setup for our cars that doesn't cost a fortune. Especially being that Mitsubishi made factory 4g54 engines with roller setups!
Kevin
#13
Posted 03 November 2015 - 10:55 AM
Mach 5, on 03 November 2015 - 10:31 AM, said:
-Jarek
Interesting for sure! I figured cam tech supplied rpw cams but their info doesn't match up right...May be just out of date. Another reason why I'm nervous.
Where were you able to get the magna rockers? Was it from that ebay site posted a few months ago? I think from a company called Kenny's or something like that?
Did you degree in your rpw cam with these rockers? If so did it take a major or minor adjustment?
#14
Posted 03 November 2015 - 11:41 AM
http://www.ebay.com....k0AAOSwl8NVeCj8
#15
Posted 03 November 2015 - 11:52 AM
This rocker arm contacts the cam at the same spot as the v6 rocker (via the same method shown in my thread in the cam forum).
kennysholdenspares & MBS-auto
OEM quality at a fraction of the price. High quality rocker arms as good as the genuine product, in fact they are the same. You just don't get the mitsubishi part Number tag inside the bag.
These are not a cheap imitation as you may find from certain US manufacturers. These are identical to the OEM rocker.
Originally fitted to the Magna/Pajero TR-TS and are an excellant performance upgrade to the Astron engine from 1.8L to 2.6L, but generally fitted to the 4G54 engine.
The Mitsubishi part number is MD106245 selling at $56.40 ea = $451.20 for a set, but are no longer available from Mitsubishi.
This sale is for a full set of 8 rockers
Also available individually just contact me if you need less than a full set..
#16
Posted 03 November 2015 - 12:06 PM
http://www.ebay.com....csAAOSw0HVWBKnu
#17
Posted 03 November 2015 - 12:24 PM
the head be careful they have many generations of heads even some that have heart shaped chambers. not that the design is bad its prob very good in terms of quench.
-Rides-
-1987 Starion -Midnight Star - FORD BARRA GTX4508r Build Progress see link
http://www.starquest...howtopic=152434
-1989 Chrysler Conquest-Track Beast Mode gtx3071r TBI 365hp 407tq @19psi/ 401hp 430tq @ 24psi sold
http://www.starquest...ic=151885&st=40
-1989 Pontiac Grand Prix Turbo SE- 3.1 gtx3582r getrag284 Tilton twin disc
-1991 Toyota Hilux Pickup 1uz itb cp pistons kelford cams TripleR head porting/ long tubes
-1986 AE86 20v.. 171hp@ 8200rpm
#18
Posted 03 November 2015 - 12:25 PM
-Rides-
-1987 Starion -Midnight Star - FORD BARRA GTX4508r Build Progress see link
http://www.starquest...howtopic=152434
-1989 Chrysler Conquest-Track Beast Mode gtx3071r TBI 365hp 407tq @19psi/ 401hp 430tq @ 24psi sold
http://www.starquest...ic=151885&st=40
-1989 Pontiac Grand Prix Turbo SE- 3.1 gtx3582r getrag284 Tilton twin disc
-1991 Toyota Hilux Pickup 1uz itb cp pistons kelford cams TripleR head porting/ long tubes
-1986 AE86 20v.. 171hp@ 8200rpm
#19
Posted 03 November 2015 - 12:28 PM
i wouldn't buy that head, I was just trying to see the rocker in relation to the cam. What I really want is an oem magna cam.... Almost worth it to buy that head just for the cam but doesn't appear they sell to usa (AU listing only)
kev
#20
Posted 03 November 2015 - 12:32 PM
I think funkyphil is coming out with a cam line btw
-Jarek
-Rides-
-1987 Starion -Midnight Star - FORD BARRA GTX4508r Build Progress see link
http://www.starquest...howtopic=152434
-1989 Chrysler Conquest-Track Beast Mode gtx3071r TBI 365hp 407tq @19psi/ 401hp 430tq @ 24psi sold
http://www.starquest...ic=151885&st=40
-1989 Pontiac Grand Prix Turbo SE- 3.1 gtx3582r getrag284 Tilton twin disc
-1991 Toyota Hilux Pickup 1uz itb cp pistons kelford cams TripleR head porting/ long tubes
-1986 AE86 20v.. 171hp@ 8200rpm
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