Oh come now. You don't really think the masses will recognize more than maybe one of those springs. ;)
A domestic spring source is nice but it still doesn't make cams any easier to get.
I decide to play with and build up a SOHC head. Why? Its the challenge I suppose: lack of domestic cam choice, springs and retainers, & head flow. The pictures above are 4G69 valve springs which are a different design to allow higher lift without binding. Seat pressure are the same as the 4G64/6G7x springs. The retainer is an aluminum magnesium alloy from Ferrea, which is much lighter than the stock retainernand the OE valve lockers do fit without modifications.
Waiting on a few things to come through such as the cylinder head w/cam so I can send the cam out to be reground from a very well known cam company. Stay tuned for updates.
Last edited by mysticj; 01-27-2014 at 07:16 PM
94 Galant GS: 4G67 head, 1G IM, Evo 8 TB, DeltaCam 272/264 Cams, Test Pipe, OE Avenger V6 60mm catback w/muffler, modified Outlander header, DIY COP setup, B/S delete, 315cc injectors, AEM UEGO WBO2, Black case 3G ECU
1994 GS FYI
DSM/CSM Manuals
Oh come now. You don't really think the masses will recognize more than maybe one of those springs. ;)
A domestic spring source is nice but it still doesn't make cams any easier to get.
94 Galant GS: 4G67 head, 1G IM, Evo 8 TB, DeltaCam 272/264 Cams, Test Pipe, OE Avenger V6 60mm catback w/muffler, modified Outlander header, DIY COP setup, B/S delete, 315cc injectors, AEM UEGO WBO2, Black case 3G ECU
1994 GS FYI
DSM/CSM Manuals
Interesting, Sohc really needs some researching and documentation.
I wonder how much difference a lighter retainer would actually make...
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6g74 Forged Engine w/ hx40 turbo
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Last edited by mysticj; 01-28-2014 at 11:10 AM
94 Galant GS: 4G67 head, 1G IM, Evo 8 TB, DeltaCam 272/264 Cams, Test Pipe, OE Avenger V6 60mm catback w/muffler, modified Outlander header, DIY COP setup, B/S delete, 315cc injectors, AEM UEGO WBO2, Black case 3G ECU
1994 GS FYI
DSM/CSM Manuals
Holy crap, that's quite the difference in retainer weight!
So you're saying the stock retainer weighs more than the intake spring? I definitely don't remember the spring being lighter than the retainer on my brothers 4g63 build.
Lancer/EvolutionX Rotor Glow Paint
6g74 Forged Engine w/ hx40 turbo
Eclipse GT 5 spd swapped
Rotor Glow Galant
Daily Galant
OZ Edition Eclipse
94 Galant GS: 4G67 head, 1G IM, Evo 8 TB, DeltaCam 272/264 Cams, Test Pipe, OE Avenger V6 60mm catback w/muffler, modified Outlander header, DIY COP setup, B/S delete, 315cc injectors, AEM UEGO WBO2, Black case 3G ECU
1994 GS FYI
DSM/CSM Manuals
Stock retainer
Ferrea Aluminum retainer
Stock valve spring
4G69 Intake valve spring
4G69 Exhaust valve spring
94 Galant GS: 4G67 head, 1G IM, Evo 8 TB, DeltaCam 272/264 Cams, Test Pipe, OE Avenger V6 60mm catback w/muffler, modified Outlander header, DIY COP setup, B/S delete, 315cc injectors, AEM UEGO WBO2, Black case 3G ECU
1994 GS FYI
DSM/CSM Manuals
ohhh nice, Thanks for the pics!
About .9 oz difference with the 4g69 (intake/exhaust avg 1.3oz) and Ferrea retainer combination or 40% lighter!
Lancer/EvolutionX Rotor Glow Paint
6g74 Forged Engine w/ hx40 turbo
Eclipse GT 5 spd swapped
Rotor Glow Galant
Daily Galant
OZ Edition Eclipse
The thing that bugs me the most is that the 4G64/6G72 valve springs are use in the 6G75. Same installed height, same valve guide. Only the valve length are the different for the 6G75, like 0.5 to 1mm shorter than the 4G64/6G72 yet it have the same seat pressure and rocker arm ratio. Perhaps different lifters?
94 Galant GS: 4G67 head, 1G IM, Evo 8 TB, DeltaCam 272/264 Cams, Test Pipe, OE Avenger V6 60mm catback w/muffler, modified Outlander header, DIY COP setup, B/S delete, 315cc injectors, AEM UEGO WBO2, Black case 3G ECU
1994 GS FYI
DSM/CSM Manuals
7G intake side oil drain casting pt1
7G intake side oil drain casting pt2. Going to have an issue with the aluminum retainer as it is too wide.
7G exhaust side bolt hole casting. There is room, just going to shave the area down a little.
8G exhaust side. Again there is clearance like the 7G exhaust side. Just shave a little off for a piece of mind.
There is no clearance issue with the the 24V SOHC heads. Also there are no spark plug tube or rocker arms interference with either SOHC heads with the aluminim retainer.
94 Galant GS: 4G67 head, 1G IM, Evo 8 TB, DeltaCam 272/264 Cams, Test Pipe, OE Avenger V6 60mm catback w/muffler, modified Outlander header, DIY COP setup, B/S delete, 315cc injectors, AEM UEGO WBO2, Black case 3G ECU
1994 GS FYI
DSM/CSM Manuals
The valves are shorter because the chamber is deeper. Everything from the tip of the guide and above is identical in terms of depth.
When mits designed the 75 they took the second gen 24v heads and made the valves as big as they could without losing performance. To do that they had to move the valves further apart (which is why you can't mismatch heads/rockers) and the chambers were made far deeper resulting in the slightly shorter valves also. Otherwise the geometry is the same.
94 Galant GS: 4G67 head, 1G IM, Evo 8 TB, DeltaCam 272/264 Cams, Test Pipe, OE Avenger V6 60mm catback w/muffler, modified Outlander header, DIY COP setup, B/S delete, 315cc injectors, AEM UEGO WBO2, Black case 3G ECU
1994 GS FYI
DSM/CSM Manuals
I hope I have luck finding these locally...Solid rocker arms.
94 Galant GS: 4G67 head, 1G IM, Evo 8 TB, DeltaCam 272/264 Cams, Test Pipe, OE Avenger V6 60mm catback w/muffler, modified Outlander header, DIY COP setup, B/S delete, 315cc injectors, AEM UEGO WBO2, Black case 3G ECU
1994 GS FYI
DSM/CSM Manuals
Omg! Look at those things! Beefy
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The "Tumbler" Is HereStock Longblock/Stock PCM | Custom Garrett 50-1 | 17 Psi | Weighing 2xxxLbs3xxWHP/3xxWTQ [Current]
And have valve adjustment.
Theres someone in PR that sells them.
«Carlos»
What problems have you faced with the hydraulic units?
94 Galant GS: 4G67 head, 1G IM, Evo 8 TB, DeltaCam 272/264 Cams, Test Pipe, OE Avenger V6 60mm catback w/muffler, modified Outlander header, DIY COP setup, B/S delete, 315cc injectors, AEM UEGO WBO2, Black case 3G ECU
1994 GS FYI
DSM/CSM Manuals
Think I am going to try using the 4G69 intake valves on the head with lash caps to make up the difference between the valve tip and lifter.
94 Galant GS: 4G67 head, 1G IM, Evo 8 TB, DeltaCam 272/264 Cams, Test Pipe, OE Avenger V6 60mm catback w/muffler, modified Outlander header, DIY COP setup, B/S delete, 315cc injectors, AEM UEGO WBO2, Black case 3G ECU
1994 GS FYI
DSM/CSM Manuals
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