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griffo

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  • Location
    Sandringham, Victoria
  • Referral
    Was a member as gsr1974 but forgotten pw and email addy defunct
  • Biography
    Once owner of 1974 GSR which I competed in club competition events during late 70's and 80's and as a daily driver. Many mods.
  • Vehicles
    GSR

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  1. griffo
    Hi, I remember early on in my GSR (EA63S) ownership in the 70s/80s that I had to rebuild the engine and one of the aspects was worn rocker shafts. The replacement ones appeared to be heat treated and had a dull grey finish. Obviously this was a known issue that Subaru was addressing... along with multiple head gasket revisions :-) I recall when rebuilding that I placed the spacers/wave washers to get the rocker finger to be as central to the valve stem as possible.
  2. griffo
    Imho, if you are looking for an easy upgrade beyond the 'GSR' twin DCG306 setup, then the Weber 40DCN running east-west over a modified single carb manifold is probably the best option. If you want to go beyond that with dual carbs mounted directly on top then you may get more top end BHP but I think the later engines with outside positioned intake valves and siamised exhaust ports probably limit this. I did run a Weber 45 DCOE on my GSR at one point with a couple of custom tube elbows that bolted onto the existing carb flanges which did provide increased top end... adding another 5mph to the ultimate top speed. A 40DCOE might have been a more appropriately sized option as we had to run fairly small chokes from memory. Had to feed the throttle in gently at low revs but once it his 4000 it revved out like a rotary... fine on the track, but a bit tiresome on the road. So my main take out is that even the dual DCG306 under-carburates the old EA63S gives v.good all round performance, although one thing the Weber did is cure the fuel surge in right-handers on the track. The DCN setup would do the same.
  3. griffo
    Would be a 77 1600 GL Coupe.
  4. griffo
    Looks like the generic setup for a GSR or GFT (Hitachi DCG306) engine
  5. griffo
    Yep, that's the edition I have. As you will see, there are large range of screens, but you should be able to narrow it down.
  6. griffo
    Hi, I am not sure if this is going to help but I have an April 75 Parts catalogue and has a large range of rear screen part numbers. Need to know what exact year/model and preferably the chassis number to lock it down. Cheers griffo
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