I was amazed

[Squirtcha?]

After pounding on my motor relentlessly for 6 straight years and running countless bottles of nitrous through it, I figured I'd run a leakdown test on it today. All cylinders read between 4% - 6% leakage. Not at all what I expected. Typically I don't cheer lead much, but Dan Nelson at Jett Performance Marine here in Phoenix put together one hell of a solid BBF 466. I haven't done a thing to it other than the change oil and filter. I run full synthetic in it and only change it once per season.
Naturally the leakdown isn't the "end all, be all" of the motor's condition, but I was still pretty happy with the results.
I need to finish some plumbing and put the valve covers back on it. Tomorrow I'll pull a compression test too. I did one on it when it was fresh and still have the results for comparison's sake. If I remember correctly it was so new the rings probably hadn't even seated at the time.

[Sleeper CP]

After pounding on my motor relentlessly for 6 straight years and running countless bottles of nitrous through it, I figured I'd run a leakdown test on it today. All cylinders read between 4% - 6% leakage. Not at all what I expected. Naturally the leakdown isn't the "end all, be all" of the motor's condition, but I was still pretty happy with the results.
I need to finish some plumbing and put the valve covers back on it and tomorrow and I'll pull a compression test too. I did one on it when it was fresh and still have the results for comparison's sake. If I remember correctly it was so new the rings probably hadn't even seated at the time.
All that tells you is; you aren't running a big enough nitrous jet;) :)
You must be looking for thing's to do or are just curious. After that leak down I' call it quits. Could you hear if it was passing the rings or valves?
Sleeper CP
Big Inch Ford Lover:D

[squirt'nmyload]

ford power :D

[Outlaw]

:D If it was a CHEVY you would'nt be amazed.:D
Sorry squirtcha, you left that one wide open.
Seriously, goes to show you that NOS run correctly
is not hard on parts

[Ken F]

......good ol fords........

[Squirtcha?]

All that tells you is; you aren't running a big enough nitrous jet;) :)
You must be looking for thing's to do or are just curious. After that leak down I' call it quits. Could you here if it was passing the rings or valves?
Sleeper CP
Big Inch Ford Lover:D
I'm maxed out with the nitrous unless I want to run an ignition box with timing control (and I don't). I run a 150 shot and I've only taken out 2 degrees. I can pull that out of the static timing without it making much difference on the off the bottle performance.
Yeah the compression test will be largely due to boredom. Might as well, it's just sitting there and I've got the time. What little leakage I had sounded like all rings. I'm running the Edelbrock Performer RPM heads and bought em loaded with valves and springs. They seem to be holding up real well. If the valves are leaking at all I couldn't hear it from the pipes or carbs.
:D If it was a CHEVY you would'nt be amazed.:D
Sorry squirtcha, you left that one wide open.
Seriously, goes to show you that NOS run correctly
is not hard on parts
Oh yeah........ya got me. Didn't see that one coming.

[IMPATIENT 1]

I'm maxed out with the nitrous unless I want to run an ignition box with timing control (and I don't). I run a 150 shot and I've only taken out 2 degrees. I can pull that out of the static timing without it making much difference on the off the bottle performance.
Oh yeah........ya got me. Didn't see that one coming.
squirt, look on ebay for a good used 3stage msd retard box if you already have a msd box. i picked up and nearly new 1 last wk for 44bucks to my door, looks brand new.then you can retard for the starter and have a seperate retard for the nitrous, plus have 1 extra retard spot left over for a 2nd stage of nitrous;) then you could run full timing curve off the bottle, when you smash the button, the retard will pull out however many degrees you pilled it for. will help a starter live forever too!

[Squirtcha?]

squirt, look on ebay for a good used 3stage msd retard box if you already have a msd box. i picked up and nearly new 1 last wk for 44bucks to my door, looks brand new.then you can retard for the starter and have a seperate retard for the nitrous, plus have 1 extra retard spot left over for a 2nd stage of nitrous;) then you could run full timing curve off the bottle, when you smash the button, the retard will pull out however many degrees you pilled it for. will help a starter live forever too!
That's kind of my point. I don't want a box. It's just another thing that can take a shit. My boat is a family cruiser and a ski boat. I try to keep it as simple as possible. If I feel the need for more juice, I'll get started on that spare block I've got on the stand in the garage. (stroker and replacement for this one when she goes).

[Sleeper CP]

I'm maxed out with the nitrous unless I want to run an ignition box with timing control (and I don't). I run a 150 shot and I've only taken out 2 degrees. I can pull that out of the static timing without it making much difference on the off the bottle performance.
Yeah the compression test will be largely due to boredom. Might as well, it's just sitting there and I've got the time. What little leakage I had sounded like all rings. I'm running the Edelbrock Performer RPM heads and bought em loaded with valves and springs. They seem to be holding up real well. If the valves are leaking at all I couldn't hear it from the pipes or carbs.
Oh yeah........ya got me. Didn't see that one coming.
Well it sure sounds like it was put together correctly that's for sure. Got to
be happy with that.:D
Sleeper CP
Big Inch Ford Lover:D

[Sleeper CP]

squirt, look on ebay for a good used 3stage msd retard box if you already have a msd box. i picked up and nearly new 1 last wk for 44bucks to my door, looks brand new.then you can retard for the starter and have a seperate retard for the nitrous, plus have 1 extra retard spot left over for a 2nd stage of nitrous;) then you could run full timing curve off the bottle, when you smash the button, the retard will pull out however many degrees you pilled it for. will help a starter live forever too!
I hope it works ?
Sleeper CP
Big Inch Ford Lover:D

[BOOGEYMAN]

Have you ever checked the bearings?

[IMPATIENT 1]

I hope it works ?
Sleeper CP
Big Inch Ford Lover:D
comes with a fresh check out receipt from msd:D i'm not stupid, just thifty;) and its not hard to test and see if they work.

[BrendellaJet]

That's kind of my point. I don't want a box. It's just another thing that can take a shit. My boat is a family cruiser and a ski boat. I try to keep it as simple as possible. If I feel the need for more juice, I'll get started on that spare block I've got on the stand in the garage. (stroker and replacement for this one when she goes).
Dan thats killer news. Im getting ready to go NOS so your results are encouraging.
About the MSD though, those things rarely fail. And when they do its more than likely installer error(bad ground) The chances of getting a bad one from the factory will be realized before you are on the water(wont get stranded) and worst case, you can always bypass the box and get moving again.
This way you can pour on more NOS and get to the stroker sooner:D

[Squirtcha?]

Dan thats killer news. Im getting ready to go NOS so your results are encouraging.
About the MSD though, those things rarely fail. And when they do its more than likely installer error(bad ground) The chances of getting a bad one from the factory will be realized before you are on the water(wont get stranded) and worst case, you can always bypass the box and get moving again.
This way you can pour on more NOS and get to the stroker sooner:D
I reckon I'm not totally against the box. At least I haven't completely ruled it out. It just runs so good I don't want to mess with it now. I'm on a tight budget this winter so I'm going to POR (press on regardless). Next winter I believe I'll order the stroker kit and get going in that direction. The good news is it looks like she'll last another season (fingers crossed).
Have you ever checked the bearings?
Honestly............no. I'm not going to pull it apart this winter either. Going to try to make it at least one more year as is. I know Dan used all the best parts when he assembled it (all ARP fastners, Federal Mogul bearings, Total Seal piston rings etc.) so I'm pretty sure they'll make it til next winter.

[IMPATIENT 1]

shit, i bet the bearings still look new too. bbf's take abuse like no other stock block i've ran. when i tore down the 20yr old bbf in my sj for rebuild to handle nitrous, the all oe bearings looked new, so did the crank, skirts, pistons, bore. love the size of the head bolts too! i mic'd the crank, no eggin or anything. i polished it up,looked new, sprayed it with cosmolene and stuck it in the corner.still have the football rods outta that motor.

[IMPATIENT 1]

I reckon I'm not totally against the box. At least I haven't completely ruled it out. It just runs so good I don't want to mess with it now. I'm on a tight budget this winter so I'm going to POR (press on regardless). Next winter I believe I'll order the stroker kit and get going in that direction. The good news is it looks like she'll last another season (fingers croseed).
Honestly............no. I'm not going to pull it apart this winter either. Going to try to make it at least one more year as is. I know Dan used all the best parts when he assembled it (all ARP fastners, Federal Mogul bearings, Total Seal piston rings etc.) so I'm pretty sure they'll make it til next winter.
runnin a msd ignition for you would help. i know your current set-up may be working great but when the nitrous is on, i bet its not. think of what happens when you mash the button. cylinder pressure sky rockets and it takes a hella current to pass spark thru it. you can have so much cylinder pressure that it'll blow out your spark or not let it spark period.

[BLEWBAYOU1]

That's a good old Ford for ya!

[YeLLowBoaT]

:D If it was a CHEVY you would'nt be amazed.:D
Sorry squirtcha, you left that one wide open.
Seriously, goes to show you that NOS run correctly
is not hard on parts
yeah if it was a chey it would have never made it past the 1st season... :)

[camoman]

That's a good old Ford for ya!Yep thats why we use them because they last more than one or possibly two seasons:confused:

[BrendellaJet]

runnin a msd ignition for you would help. i know your current set-up may be working great but when the nitrous is on, i bet its not. think of what happens when you mash the button. cylinder pressure sky rockets and it takes a hella current to pass spark thru it. you can have so much cylinder pressure that it'll blow out your spark or not let it spark period.
You should see the coil hes running. :jawdrop: I doubt his cylinder pressure is blowing the flame out.

[cave]

I hear ya Dan. After your first go round this motor kinda made up for it.

[Cheyenne580]

Hey Dan..... which ignition box are you running?
Jim
P.S. I've got three years on my chevy!!!!!!!

[Squirtcha?]

No box Jim. Just a Mallory Unilite distributor and Mallory Promaster coil.
http://www.malloryperformance.com/e-images04-350//5072101.jpg
http://www.malloryperformance.com/e-images04-350//29625.jpgHey Dan..... which ignition box are you running?
Jim

[Cheyenne580]

Just one more ?. How many motors before Dan Nelson?
Jim

[tx-19]

put some seats in that and lets go boat.:D

[tx-19]

Hey Dan..... which ignition box are you running?
Jim
P.S. I've got three years on my chevy!!!!!!!
i had five on mine,and was still running when i pulled it out.:)

[Cheyenne580]

5 years is good joey

[Squirtcha?]

Just one more ?. How many motors before Dan Nelson?
Jim
The original (bone stock and possibly the original).
One rebuild by Standard Machine that didn't make it past cam break in.
The one that Dan put together.

[Blown Income]

You should check the wrist pins and pin bores nitrous is hard on them.

[blueovaljunkie]

Glad to hear someone is having good luck with the mallory unilite,I burned up 2 modules,swapped over to msd and never had an issue again.I got a 466 in my boat and my son and i put it together 2 yrs ago and still runs strong. I love my ford motor.....

[Squirtcha?]

Glad to hear someone is having good luck with the mallory unilite,I burned up 2 modules,swapped over to msd and never had an issue again.I got a 466 in my boat and my son and i put it together 2 yrs ago and still runs strong. I love my ford motor.....
Had excellent luck with the Mallory. Bought the boat about 10 years ago and the distributor was one of the first changes I made. It's worked flawlessly ever since. I've got a buddy that runs the same one and he's never had any problems either.
Heard stories of guys shearing off distributor gear pins, but never module failures. Still running the original shear pin too. I've got a spare module in my tool box, but it's still in the original packaging (haven't needed it fingers crossed).
I even do the ultimate "no no" according to Mallory tech support, by charging the battery with the distributor connected.
You should check the wrist pins and pin bores nitrous is hard on them.
You might be right there. I'll check em next year. You can laugh at me and tell me "I told ya so", if it doesn't make it through the next season of running.