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Search: Posts Made By: NHGuy
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Forum: General Q & A
06-29-2020, 01:49 PM
Replies: 33
Views: 1,694
Posted By NHGuy

Realized I lied. I had the 19 pitch on that day.

Realized I lied. I had the 19 pitch on that day.
06-27-2020, 02:42 PM
Replies: 17
Views: 785
Posted By NHGuy

Yes and yes. Also if you already know Holley...

Yes and yes. Also if you already know Holley style carburetors Quickfuel makes some very nice marine carbs. (have one on my 383) The intake you asked about has the right mounting size (square bore)...
Forum: General Q & A
06-25-2020, 08:32 PM
Replies: 33
Views: 1,694
Posted By NHGuy

I "borrowed" SB's cam from his 350 for my 9.8:1...

I "borrowed" SB's cam from his 350 for my 9.8:1 partially forged 383.

It's
Comp Cams OE roller style CS 268XFI HR13 Cam

Valve Lift .570” Intake .565” Exhaust

Duration at .050 lift, 218...
Forum: General Q & A
06-21-2020, 09:33 PM
Replies: 33
Views: 1,694
Posted By NHGuy

i like a lot of your design but I do have a...

i like a lot of your design but I do have a suggestion. I'd recommend bigger intake runners. I'd do 195s to 215s. Your boat will take off fine even with the lessened low end of the big runner...
05-21-2020, 04:51 AM
Replies: 45
Views: 29,483
Posted By NHGuy

Old Thread. Does anyone know if the turbo lived...

Old Thread. Does anyone know if the turbo lived under the hatch/cover in psi's boat? How about the hatch, did it get hot? Or did the turbo blanket do the trick?
04-18-2020, 07:00 PM
Replies: 4
Views: 735
Posted By NHGuy

But yes, you can use the pieces you want from the...

But yes, you can use the pieces you want from the Black Scorpion. Maybe get the Mercruiser manual and go through the diag process on the wiring and sensors. The ecm is likely bad. I also have a...
04-18-2020, 06:53 PM
Replies: 36
Views: 4,097
Posted By NHGuy

Oops long time between answers. Yes no more water...

Oops long time between answers. Yes no more water in chambers. Buuut, remember I also took off that Thunderbolt V ignition. And I also needed my heads resurfaced. It was a very small cut according...
Forum: General Q & A
04-18-2020, 02:52 PM
Replies: 8
Views: 619
Posted By NHGuy

I think it's the other way. If the set screws...

I think it's the other way. If the set screws are sticking out the and locks are way down into the rockers - the heads would need longer studs to get the locks raised.which will lower the set...
03-02-2020, 08:31 PM
Replies: 4
Views: 735
Posted By NHGuy

I have a perfect running takeout 1997 5.7 roller...

I have a perfect running takeout 1997 5.7 roller motor, with new OE exhaust and base heads from 2013. It's not a Black Scorpion, it is a 350 Mag carb engine. The new bits have one very short season...
Forum: General Q & A
02-21-2020, 06:07 PM
Replies: 74
Views: 8,570
Posted By NHGuy

I'd test the engine by making up a gauge and...

I'd test the engine by making up a gauge and valve for the cooling water inlet, then clamping the cooling hoses that go to the exhaust manifolds. Put about 13 or 15 psi in there. Listen for hissing...
Forum: General Q & A
01-30-2020, 08:35 PM
Replies: 74
Views: 8,570
Posted By NHGuy

I had a wet exhaust problem with my 10:1 383 SBC...

I had a wet exhaust problem with my 10:1 383 SBC and that cam.
It finally went away when I moved my adjustable roller chain cam gear from 4 degrees retarded to straight up. I also did a Davis...
Forum: Formula
10-29-2019, 06:37 PM
Replies: 3
Views: 225
Posted By NHGuy

86 F223LS VDO fuel sender ohms

How do I determine what ohms sender to use for my factory VDO fuel gauge? I have the OE book and all it says is VDO gauges work with VDO senders. I'm reading that VDO uses 10 to 180 ohms. Not the...
10-27-2019, 07:10 PM
Replies: 9
Views: 1,668
Posted By NHGuy

Spraying Gel Coat

I'm getting ready to redo the kitchen and 2 bathrooms at my house and one of the projects is to repair two one piece tubs with surrounds. I may change them from beige to white while I am in there...
Forum: General Q & A
10-05-2019, 04:34 AM
Replies: 5
Views: 507
Posted By NHGuy

Or save your fabrication money and put on a...

Or save your fabrication money and put on a procharger! Woo!
10-01-2019, 01:14 PM
Replies: 10
Views: 1,189
Posted By NHGuy

There's an ol' school move. Like it. I've been...

There's an ol' school move. Like it.
I've been working covering vacations and on the one day a week I've been available the weather has been so bad I haven't tried the fat mix yet.
It's getting...
10-01-2019, 01:06 PM
Replies: 25
Views: 2,048
Posted By NHGuy

Yes, I am new to carb tuning but have done a...

Yes, I am new to carb tuning but have done a Q-jet, a Weber using Edelbrock stuff, and now the Quickfuel. I find the Quickfuel easy to work on, but I know more now too. The silicone-like gaskets...
Forum: General Q & A
10-01-2019, 10:56 AM
Replies: 7
Views: 471
Posted By NHGuy

I have a double fuel bowl Quickfuel 750 that's a...

I have a double fuel bowl Quickfuel 750 that's a lot like a Holley. I have just increased my jet size by 2 on my primaries for the same reason.
I was getting 13.8 to 14.1 in the 2850 to 3200 rpm...
Forum: General Q & A
10-01-2019, 10:45 AM
Replies: 9
Views: 306
Posted By NHGuy

Absolutely agree about shifting into gear with...

Absolutely agree about shifting into gear with authority. Don't go slowly and allow the gears to ratchet, that's wear.

You may be able to rule out the sticking shifter issue by testing with one...
Forum: General Q & A
10-01-2019, 10:12 AM
Replies: 6
Views: 840
Posted By NHGuy

You can swap the sensors between the engines too....

You can swap the sensors between the engines too. See if the problem stays with the engine or the sensor.
09-23-2019, 11:05 AM
Replies: 10
Views: 1,189
Posted By NHGuy

Good to know. Maybe a fatter mix is all it will...

Good to know. Maybe a fatter mix is all it will want.
09-22-2019, 07:39 PM
Replies: 10
Views: 1,189
Posted By NHGuy

Dialing my setup 383 carb Alpha

I have things working pretty well on the engine. You may recall that I had been fighting some head gasket issues which now seem corrected. I bought a new DUI ignition as well, it's been working as it...
Forum: General Q & A
09-19-2019, 08:03 PM
Replies: 4
Views: 471
Posted By NHGuy

Yes, the manifolds are cast metal and they...

Yes, the manifolds are cast metal and they corrode,but the stainless risers last a lot longer.
Forum: Swap Shop
09-07-2019, 10:39 AM
Replies: 2
Views: 571
Posted By NHGuy

Do you have the rest of the pieces, or just the...

Do you have the rest of the pieces, or just the flat planes?
Forum: Formula
09-03-2019, 07:41 PM
Replies: 4
Views: 456
Posted By NHGuy

Hey, you probably figured this out, but an...

Hey, you probably figured this out, but an adjustable length boat hook makes a good hatch prop. I usually put my hatch up high and disconnect the actuator to lay it down and make room to work,.
Forum: Formula
09-03-2019, 07:38 PM
Replies: 3
Views: 393
Posted By NHGuy

Are you talking about the rear swim step? If so,...

Are you talking about the rear swim step? If so, yes they can be un bolted.
My pump may be different but it could be same. Mine is at the very back of the engine compartment just to the inside of...
Showing results 1 to 25 of 337
 


 
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