188 replies to this topic

[Uncle Chop Chop]

Are those Chevy 4 bangers easy to get hold of second hand and in reasonable condition?

[Uncle Chop Chop]

Is the weight of those buggers correct on the following page?

 

https://www.mercurym...mercruiser/30l/

 

It seems a bit heavy.

[Uncle Chop Chop]

I thought the 415 KG weight was probably an error. That sounds more like the weight of a BBC.

[Uncle Chop Chop]

I had another look, they definitely have something wrong.

 

604 lbs / 417 kg

 

417 KG = 919 lbs.

[EunUCh]

What ever you do to one of these things is don't run the water pump/alt. off the crank pulley as it is set up on a stock six in order to try and dampen "harmonics" by trying to use the elastic properties of  rubber...it don't work.

 

Apologies for doubting or questioning any ones word on what needs to be done!

 

If some one is in the process of "building  up" one of these things..... try red rods,lightest short skirt pistons with right pin height to suit whatever bore size (if you can get them?).

One thing i don't understand is why would they use a heavy rod in something so under stressed?

 

My next step is to park the thing under some nice shady trees and buy a Ford.

 

On the "pointless" ignition side of things...not that hard.

Don't remember what the stuff came off (the good old days of dumped cars) but it works..seemed to "help" a bit but that may have been due to a mismatched coil on the points system?

 

Twin SU's with will rattle the slides like all frok at idle with a bit of a cam.

Twin dcoe40 is sort of not too bad with idle of roughly 1100 ish or a tad aboveish  with current cam...not too bad from 3 upwards..need to use the gears a bit though!

Dizzy

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the other bit

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the shielded wires to and from dizzy to other bit are a must they reckon?...i don't really care because there is enough filtering built in 

to cope with the "noise".

 

 

 

 

 

 

 

 

 

 

[EunUCh]

Something else that the minority who are considering playing with one these things might consider?

If you are contemplating putting a "a bit of a cam" in one,the standard valves are a bit on the short side for any decent bit of lift to the 

point of coil bind.

V6 valves need a bit off the heads to get them back to standard diameter,you can either ditch the "spacer" on the exhaust or make a 

cupped shim fitted on spring seat to take it's place and use a stock retainer to get the seated tension within reason?

Stock V8 springs seem to a little on the "tight" side but shit loads nicer than stupid seated tensions that were "recommended".

Not only do the heavy ones put a  "strain" on cam/bearings,they also cause other obvious problems when turning the engine over

by hand...among other things.

After setting up seated tension as what was recommended as max (just under) i found that a softer setting was "nicer" and the thing would tend to "pick up and spin out" nicer...for want of better words..even on 32mm chokes (just over 5krpm for that size according to weber,but will go to 6)..it just seemed to get there better.

The vibration thing...without being argumentative as i can sometimes be when not knowing (not taking heed at times) is still an issue.

But......i have now learned that the vibration issue "could" be caused by valve train issues?

This may be all well and true but without really knowing what is going on i am at a loss,out of patience/time/money to stuff around with junk any more.

Some one did this to one once?

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