Got the chance to fuck around with 5his wreck again today.
Plumbed in an electric fuel pump. (It was a GMB unit for a subaru leone, bought from rock auto as a lift pump for my 620 ute) but it couldnt suck any gas through either. Like an utter fucktard, i inverted the pump polarity. (That did nothing, no buzz)
So i switched it back. That now did nothing too. Then some smoke escaped from the pump. So a brand new pump that never even saw gas once is now destined for the bin. (Its very fortunate rock auto is so cheap)
So i popped the gas cap, and jammed 120psi down the fuel supply line to the tank. It didnt really seem like it was pushing much. The old boy showed up, so he shot the air in while i listened at the fuel filler hole. Didnt sound like much. then a huge rush of air burst through.
Obviously since it sat so long, the gas had turned to shit and blocked the line. So sooner or later the gas tank will need to come out for a de-scuzzing.
So i reconnected the mechanical fuel pump, and cranked it over. The fuel filter quickly filled up, and it burst into life. (Sort of) ran a bit wooly. And wouldnt stay running on the main fuel circuit. 99% sure the old gas in the bowls has turned to varnish, and blocked the jets/capillaries. I dumped 2/3rd of a bottle of CRL into the radiator, and filled the rest up with water. Which involved another fuck around trying to get the hose working. (I took a bucket of miscellaneous hose fittings over with me)
Using generous lashing of pedal pumping, i kept it running long enough warm it up. then drained the rad, and repeated a few times. Later i plucked the thermostat, and hosed the block out a few times. Eventually the stuff coming out looked clean.
The old boy asked if i wanted him to clean the carb out for me. (Hes just build a 750 DP for his VF, and it piecing together another 650DP 5hat he got for free) since hes semi retired, i said yeah go on. (Im quite time poor) so i whipped it off and gave it to him. (The fuel that dribbled out the bowl vents onto the lawn to empty them was fucking putrid) (the colour of a dehydrated piss, and even more stanky)
The manifold is an Edelbrock "street master". Which is a single plane open plenium. But its a design from the post oil shock '70s. (Apparently it won some award in its day)
So despite being single plane, its got quite a small plenium volume. Somebody on a mopar forum filled with clever people reckoned they pull quite hard to 4000. This manifold also has the smaller ports to match with the 318 ports. (340 and 360 are bigger) im running a 390cfm 4bbl carb. The small carb means higher air speed. Which makes for really sharp bottom end response. (It should pair nicely with this manifold) the last engine this carb was one was quite punchy down low too. I strongly suspect that it will benefit from a carb spacer. As luck would have it, i picked up a carb spacer a while ago that will spice things up once i get the vehicle back on the road.
This carb spacer is tunable up to 250hp. Although i suspect aiming that high would be a one way ticket to a sump full of piston fragments.
Then focus shifted to my pile of diffs.
Fairly sure the diff isnt an LSD. Since ive pulled apart so many Vals over the years, ive got a good collection. I had the idea in my head one of them was a 3.23:1 lsd.
However after removing the back plates to check the ratio on four different VG valiant diffs, apparently none were fittes with that ratio. (And only one was an LSD)
You can identify a bougie warner M75 LSD by the extra set of bolts which hold the halves of the nugget together.
So after lugging heavy diffs about, and touching gear oil that was put in these diffs possibly before some of you were born, i shelved that persuit.
Ive got an LSD nugget that i scored off @unlimitedpower a long ways back. (Reportedly scavanged from a EA-ish falcon) this will be pulled down, inspected, and set back up to the factory spec. (Way back when i first joined OS i bought a Factory VH valiant workshop manual of somebody on here. It has the specs these are supposed to be set up to)
If I remember to take pictures, ill do a post when that gets done.
So coupled with cutting the grass, i finished the day stinking of gear oil, and stale gas. (And because theres no proper hand cleaner at mums, i had to use cold water surf. (Well, the Pams equivalent)
