Volvo 5.0 (ford ) problem

[duckman4548]

Hi, I repower this winter with another 302 ford motor which is in front of a duoprop drive, motor was from a reputable builder in ME...I started it today and there is spark at the cap and plugs on all cyl's. But removing wires from # 3,5,7 from cap has no effect on motor which is rough at idle...this has a zero lash valve train set up. If you back off the rockers on the 3 mentioned above the motor straightens out ( which is letting valves close) but after you retighten the rockers it goes back to rough idle. I have to talk to the owner of the rebuild shop in am but the person who I spoke with this afternoon said it might have to be shimmed??? Has anyone ever heard or done this??? Thanx for any input

 

[Sparkinator]

Re: Volvo 5.0 (ford ) problem

Did the engine swap involve a 5.0 HO? My 95 Ford Volvo is an HO, and I know the firing order is completely different from a standard 5.0. The HO uses the 351 firing order.

 

[Walt T]

Re: Volvo 5.0 (ford ) problem

I was just gonna say.... I've run into that a few times. Stuck a '95 'Stang HO 5.0 motor in my 85 Lincoln and it took me a bit to remember that. Getting old sucks. Cool Lincoln though.

 

[duckman4548]

Re: Volvo 5.0 (ford ) problem

THANK YOU both very much...would have never thought the firing order could be wrong as good as it ran high end, and with that much difference in #'s...Thanx

 

[duckman4548]

Re: Volvo 5.0 (ford ) problem

I was going by the info on the original decal on motor which was a ho, it says to set the timing at 10%, what would you use for timing on the stock 302 that's in there now

 

[Walt T]

Re: Volvo 5.0 (ford ) problem

What would I use? I'd advance it incrementally until it started pinging and back it off a bit and leave it. However since some people are sticklers for those silly factory specs well I suppose 8-10 degrees is good.

 

[duckman4548]

Re: Volvo 5.0 (ford ) problem

Thanx again wait

 

[bajaunderground]

Re: Volvo 5.0 (ford ) problem

I should add the 5.0L of that generation has bolts on the rockers in lieu of studs and if I remember correctly they should be tightened too 25lb-ft?!

My 1996 HO is set at 10* BTDC. Was the cam changed? if so, you'll need to know what lift/duration etc...