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Re: Evo 8 cams in a 4G63


3rdstrikedsm
Now mandatory for Wendy's Chili to come with cheese


Galant VR-4 org Post #: 1028049 posted 10/22/11 09:35 PM     Remind Me!  Send Private Message   Edit Post      
Not US spec cams^^



1994 supra 6spd 612whp and more to come soon!
1995.5 Audi s6 Vi-pec powered!

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FlyingEagle
Doesn't Match Anything


Galant VR-4 org Post #: 1028116 posted 10/23/11 08:30 AM     Remind Me!  Send Private Message   Edit Post      
Swapped cams in the head locations due to EVO 8 running exhaust on the rear of the head, intake on the front. Opposite cam positions to the 1/2G 4g6X motors.



C53A 1 of the ~1500

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talontyme
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1505/2000


Galant VR-4 org Post #: 1029442 posted 10/27/11 04:17 PM     Remind Me!  Send Private Message   Edit Post      
The non turbo cams are cheap and also provide a little bump in performance without the modding.



95 Mitsu GSX-650hp monster
92 Laser RS awd-sold
1505/2000-sold
224/2000-traded

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kaptainballistik
Junior Member


Galant VR-4 org Post #: 1029475 posted 10/27/11 06:14 PM     Remind Me!  Send Private Message   Edit Post      
Well, Ive got a bit further...

You have to cut the CAS slot onto the Intake Cam as the exhaust does teh Timing on an EVO8 and the cams are approximately 180deg out..

unless the cams are asymetrical and the intake can do the exhaust!



Throttle.....Thats an on off switch isnt it?

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kaptainballistik
Junior Member


Galant VR-4 org Post #: 1029482 posted 10/27/11 06:33 PM     Remind Me!  Send Private Message   Edit Post      
Ok, there was ANOTHER thread on this ( 5 pages worth..) and I cant find it now!

anyone know which one it was?



Throttle.....Thats an on off switch isnt it?

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gaylantvr4
Joe


Galant VR-4 org Post #: 1029524 posted 10/27/11 08:37 PM     Remind Me!  Send Private Message   Edit Post      
i installed a set of 94 galant gs cams with great sucess.i think they are the same as the amg cams.



998/1000

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OGRallyEdition
Unregistered


Galant VR-4 org Post #: 1029964 posted 10/29/11 09:12 PM     Remind Me!  Send Private Message   Edit Post      
This is a cut and paste from another post on 4g61t.org from when I was trying to ID some cams I have:

4G6x DOHC
Listed is the open/close, (duration), cam height, and lift.
Letter= Cam ID mark

Intake
A-26/46 (252) 35.49 9.5mm
B-21/43 (244) 35.20 9.0mm
C-23/57 (260) 35.79 10mm
D-21/51 (252) 35.49 9.5mm
E-16/48 (244) 35.20 9.0mm
F-26/38 (244) 35.20 9.0mm
G-18/62 (260) 35.79 10mm
H-Unassign
I-Unassign
J-21/51 (252) 34.91 8.5mm
K-18/62 (260) 35.38 9.3mm

Exhaust
A-55/9 (244) 35.20 9.0mm
B-Unassign
C-57/15 (252) 35.49 9.5mm
D-54/18 (252) 35.49 9.5mm
E-43/17 (240) 34.91 8.5mm
F-53/07 (240) 34.91 8.5mm
G-63/21 (264) 35.49 9.5mm
H-63/21 (264) 34.91 8.5mm
I-Unassign
J-57/15 (252) 34.91 8.5mm
K-Unassign

The cams K(intake) and H(exhaust) are found in the 94 Galant GS.
The exhaust cam 'H' can be also found in the 94-97 RVR/SpaceRunner.
The cams G/G can be in the Euro market(1G Eclipse/Galant, 2G Eclipse, 89-91 Colt GTi 1800) and very few DSM. Consider yourself lucky if you find them in a DSM. These cams were also found in non USDM 4g67 Galants.

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kaptainballistik
Junior Member


Galant VR-4 org Post #: 1031097 posted 11/04/11 01:51 AM     Remind Me!  Send Private Message   Edit Post      
Its possible

Just get the CAS slot in the right place :/



Throttle.....Thats an on off switch isnt it?

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desant78
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Galant VR-4 org Post #: 1036938 posted 11/30/11 01:38 AM     Remind Me!  Send Private Message   Edit Post      
Anyone care to make a how to? I'm a newb to cams but have access to a machine shop. What us the mention to a pin moving mean? And his do you know shreds to put the slot?



i wanna go fast.

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DR1665
Kill him in the face with Wilson Phillips


Galant VR-4 org Post #: 1037102 posted 11/30/11 07:43 PM     Remind Me!  Send Private Message   Edit Post      
Assuming I go this route, I'll be sure to do a write-up, but it will be some time. Funds are really tight at this end for a while. (Evo cams are useless if you don't have the rest of the engine ready to go!)

The pins we're talking about are used to index the cams correctly when assembling the engine. If you take a look at your cam gears, you'll notice each has a single pin showing right next to the center bolt holding the gear on. When the engine is timed right, one of these pins will be at 12 o'clock, the other at 6 o'clock. This is called "indexing" because the location of that pin is precisely set in relation to the grind of the cam lobes and it makes it possible to time the engine without the use of complicated tools beyond your favorite four-letter words.

The slot in question is in the end of our intake cam. On the end of the head over by the throttle body, you'll see this little UFO-looking jobber bolted to the side. That's your Cam Angle Sensor (CAS). If you've never had one off, removing it exposes the end of the intake camshaft, which has a slot cut into it, which is where the little propeller-type doo-dad on the CAS sits. As the intake cam spins, it spins the CAS, which the ECU uses (among other sensor inputs) to calculate injector and spark timing and whatnot.

The Evo 8 cams are indexed opposite ours. Could be the CAS on the newer engine is on the exhaust. Could be the engine is installed backwards. I don't really remember and it doesn't matter. When those cams go in OUR engines, the pins will be in the wrong place (making setting your timing belt a problem) and the slot is on the wrong cam (making CAS installation a problem).

SO, as Pete (and others) said, in order to run the Evo 8 cams in our engines, we need to drill new holes in our cam gears for the new pin locations and cut a slot in the end of the other camshaft - both of which require a fair amount of precision. Not to say it's impossible, but it's not like taking a Dremel to the factory airbox.

Hope this helps.



Brian | 98 Pajero | Gearbox Magazine

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DR1665
Kill him in the face with Wilson Phillips


Galant VR-4 org Post #: 1041479 posted 12/22/11 01:54 PM     Remind Me!  Send Private Message   Edit Post      
BUMP!

Just scooped up a set for $40.

195/2000 is going back together...



Brian | 98 Pajero | Gearbox Magazine

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desant78
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995/1000


Galant VR-4 org Post #: 1041502 posted 12/22/11 04:11 PM     Remind Me!  Send Private Message   Edit Post      
I also got a set for $50 but since then plans have changed...will post pics in summer if I do try and fabricate them.



i wanna go fast.

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Captn
Crotchbaby


Galant VR-4 org Post #: 1043083 posted 01/01/12 05:29 PM     Remind Me!  Send Private Message   Edit Post      
So to be clear, what is all needed to make this happen? Is there a need for new cam gears as well as the machine work? I am interested in doing this I would just like to know of everything needed, besides the machine work and the actual camshafts!

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SSGdave
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Galant VR-4 org Post #: 1043935 posted 01/05/12 07:42 PM     Remind Me!  Send Private Message   Edit Post      
Ok, so a couple of people have been asking about this again.
So I thought I'd up date what I posted...

Car Passeed CA Smog with the Evo cams *win*



Yeah its me "SGTdave". ...and I still don't fuck around when there's work to be done.
1991 GVR4 1855/2000 - Daly Driver "Frankie"
1990 GGSX(turbo)- Project/Serious Road Race Car "Uncle Randy"

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DR1665
Kill him in the face with Wilson Phillips


Galant VR-4 org Post #: 1044288 posted 01/07/12 01:15 PM     Remind Me!  Send Private Message   Edit Post      
@SGTDave - Thanks for sharing. If they pass CARB smog, I'm sure they'll pass ADOT here in Phoenix.

Got a couple quick questions for you, sir.

PINS
You said you indexed pins relative the #1 lobes, correct? Sounds simple enough, but why did you have the cam re-pinned versus re-drilling the gears?

CAS SLOT
I've seen more than a couple pictures of a double-slotted Evo EXHAUST cam. Not the way to do this mod. In taking a quick look at a stock DSM intake cam, it's not immediately obvious what to use as a reference point to cut the new slot. What did you use as your reference point to find your cut?

My plan is to document the install with lots of pictures and specific details (because there's a lot of half-assed, old posts out there I just don't trust). Basically, this is a $40-$50 set of OEM-quality cams delivering a mild upgrade. I think the community deserves the confidence to get the right cams, machine them properly, and install them.

Looking forward to your feedback, sir. Thanks.



Brian | 98 Pajero | Gearbox Magazine


Edited by DR1665 (01/07/12 01:16 PM)

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Alex
Junior Member


Galant VR-4 org Post #: 1044295 posted 01/07/12 02:05 PM     Remind Me!  Send Private Message   Edit Post      
I'd be interested in finding out the results as well. I had a set of Evo8 cams and just did more research and found out it's not worth all the effort. So I brought dks hks 272's and I love them.

Alex



94 eagle talon tsi holset h1e

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Turbotalon1g
Newbie


Galant VR-4 org Post #: 1049913 posted 02/04/12 09:58 AM     Remind Me!  Send Private Message   Edit Post      
I'm interested in this, but it does sounds like a lot of work for small results.

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tektic
Senior Member


Galant VR-4 org Post #: 1239660 posted 09/21/17 10:49 PM     Remind Me!  Send Private Message   Edit Post      
Would like to know how you indexed the cam angle sensor as well.

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AllanL
Heal and Toe


Galant VR-4 org Post #: 1239664 posted 09/22/17 05:39 AM     Remind Me!  Send Private Message   Edit Post      
i used evo 8 intake cam as 1g intake cam.

cam gear dowels should be indexed first.

here's how to index it: click

once you've marked or indexed the cam gear dowels, put the evo 8 intake cam on the 1g intake side of the cyl head with the new cam gear mark/dowel at 12:00.

with the CAS side of the cam exposed but without the cam caps, you will have the base of the cas side cam cap as a reference line to mark the cam.

this line you will 'draw' will be the center line of the slot that needs to be machined on the evo 8 intake cam.

hope you get it from these pics below...[first pic is exhaust cam, but attached just to show you how it should be indexed]...





*thanks for the pics taken from gvr4 and dsmtalk...



Edited by AllanL (09/22/17 05:55 AM)

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tektic
Senior Member


Galant VR-4 org Post #: 1239680 posted 09/24/17 09:48 AM     Remind Me!  Send Private Message   Edit Post      
That's a good thread I didn't find. Thank you. So to sum it up: aftermarket cam gears with two holes, mark parallel to the top surface of the head and then cut.


Edited by tektic (09/24/17 10:03 AM)

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AllanL
Heal and Toe


Galant VR-4 org Post #: 1239681 posted 09/24/17 04:34 PM     Remind Me!  Send Private Message   Edit Post   
yes.

done it several times already with evo 7, hks, fp.

it was easier to find later evo cams than dsm ones, thus the need to study.

be careful with the aftermarket cam gears with the 2 dowel holes.

the dowel holes are 90deg apart, BUT the evo cam gears' timing marks inline aren't at 12:00 when the dowel holes is at 12:00.

take a look several times before actually putting the new dowel holes.

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