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Forum: General Q & A
03-23-2018, 06:19 PM
Replies: 71
Views: 3,221
Posted By mcollinstn

#6 Drives are the best investment you can have.. ...

#6 Drives are the best investment you can have..
But they still get queasy right around the numbers you are shooting at. Keep that in mind, and make sure your drives are happy and everything shimmed...
Forum: General Q & A
03-23-2018, 06:15 PM
Replies: 5
Views: 211
Posted By mcollinstn

17205 - Marine - Gen 6 - 454 - oval port heads ...

17205 - Marine - Gen 6 - 454 - oval port heads
17201 - Marine - Gen 6 - 454 - rectangular port heads

BOTH come with 17042 composite marine gasket w stainless fire ring

MC
Forum: General Q & A
03-23-2018, 05:47 PM
Replies: 18
Views: 701
Posted By mcollinstn

Valves appear to be about the same height both...

Valves appear to be about the same height both heads.
The head (with no blue pen) were spotfaced with a larger diameter cutter than the head with the blue pen. This could either be a physically...
Forum: General Q & A
03-23-2018, 05:25 PM
Replies: 6
Views: 398
Posted By mcollinstn

SOME stepped hulls can interfere with...

SOME stepped hulls can interfere with hull-mounted water pickups. Stepped CATS definitely are picky about placement.
On a <100 mph boat, adjusting them deeper until you have consistent pressure at...
Forum: General Q & A
03-23-2018, 05:10 PM
Replies: 46
Views: 1,779
Posted By mcollinstn

Port matching is NOT always better.. Plenty of...

Port matching is NOT always better..
Plenty of BBC intakes run great with smaller port opening than the heads, and artificially "opening them up to match" doesn't always result in gains.
The ONLY...
Forum: General Q & A
03-13-2018, 11:10 AM
Replies: 16
Views: 630
Posted By mcollinstn

330's never came with rectangle port heads. ...

330's never came with rectangle port heads.
The '92/'96 Gen 5 Bravo3 and Magnum motors DID have rect port heads.
The other Gen 5 motors had peanuts.

Do you have a B3 boat?
Forum: General Q & A
03-12-2018, 07:17 PM
Replies: 48
Views: 3,272
Posted By mcollinstn

Yeah, you are tapdancing around essentially the...

Yeah, you are tapdancing around essentially the same cams for the most part. Sure a little more lobe separation will help a touch, but if you don't have reversion problems I wouldn't bother changing...
Forum: General Q & A
03-12-2018, 07:07 PM
Replies: 48
Views: 3,272
Posted By mcollinstn

Your boosters weren't getting enough signal....

Your boosters weren't getting enough signal. Swapping to stepped boosters and playing with the bleeds should have fixed up the 850. That, and maybe a little drill bit work on the secondary metering...
Forum: General Q & A
03-12-2018, 07:03 PM
Replies: 71
Views: 3,221
Posted By mcollinstn

I looked thru the newspapers, but I didn't see...

I looked thru the newspapers, but I didn't see anything about THAT Black Friday sale..

MC
Forum: General Q & A
03-12-2018, 11:29 AM
Replies: 70
Views: 2,984
Posted By mcollinstn

79formula's recipe is exactly what you need to do...

79formula's recipe is exactly what you need to do what you said you wanted.

ARP rod bolts are great, and I would use them if you plan to run 5600, but you WILL need to have the big ends resized if...
Forum: General Q & A
03-12-2018, 10:20 AM
Replies: 16
Views: 630
Posted By mcollinstn

Mild performance upgrade is easy. Significant...

Mild performance upgrade is easy.
Significant performance upgrade basically tosses away everything but the block (and the Gen 5 block is the least suitable for serious performance).

Your 330...
Forum: General Q & A
03-12-2018, 10:09 AM
Replies: 4
Views: 237
Posted By mcollinstn

Quite often, the "bargain" marine tachs get...

Quite often, the "bargain" marine tachs get oxidation on the selector switch contacts. If the boat lives in saltwater, even moreso.
Assuming you have no problems with your wiring and the tach...
Forum: General Q & A
03-10-2018, 06:52 PM
Replies: 71
Views: 3,221
Posted By mcollinstn

I'm just gonna pipe in here one time. There is...

I'm just gonna pipe in here one time.
There is NOTHING NEW or WEIRD about your horsepower/longevity goals.
You have access to INCREDIBLY talented MARINE engine builders on this thread. Laz Mesa and...
Forum: General Q & A
03-08-2018, 04:01 PM
Replies: 4
Views: 278
Posted By mcollinstn

Something like an Aeromotive with an external...

Something like an Aeromotive with an external bypass regulator with boost indexing.
Be aware, though, that a positive displacement fuel pump will warm up your fuel tank on a long cruise. For that...
Forum: General Q & A
02-25-2018, 11:11 PM
Replies: 53
Views: 2,908
Posted By mcollinstn

The seawater pump is positive displacement within...

The seawater pump is positive displacement within normal pressure ranges. If you run thru the pump, it will do a fairly good job of regulating the water flow. Obviously, you don't want to blast 110...
Forum: General Q & A
02-21-2018, 07:37 PM
Replies: 7
Views: 484
Posted By mcollinstn

Definitely have the block zero-decked with...

Definitely have the block zero-decked with whatever pistons you choose (piston compression height same as cylinder deck height).
This will allow you to use the inexpensive .039" FelPro Permatorque...
Forum: General Q & A
02-21-2018, 03:47 PM
Replies: 53
Views: 2,908
Posted By mcollinstn

I thought I had seen your bottom end specs, but...

I thought I had seen your bottom end specs, but when I went back to look I didn't see it.
Yep, your bottom end is fine.

Your combo with marine exhausts ought to fall short of 450hp.
I'm not real...
Forum: General Q & A
02-20-2018, 08:13 PM
Replies: 7
Views: 484
Posted By mcollinstn

Merc Racing risers are usually Gil. Where are...

Merc Racing risers are usually Gil.
Where are your pistons in the holes? Zero deck? -.020"? +.010"?
Are they flat-tops or dished or pop ups?
You say 9.5:1, but that depends on everything from...
Forum: General Q & A
02-20-2018, 08:05 PM
Replies: 9
Views: 294
Posted By mcollinstn

If you have the Kiekhaeffer Zero Effort levers,...

If you have the Kiekhaeffer Zero Effort levers, then there are adjustable STOPS both ends of travel, there are several holes you can move the cable connector to depending on what throw you need, and...
Forum: General Q & A
02-20-2018, 07:56 PM
Replies: 13
Views: 587
Posted By mcollinstn

The cables develop kinked places in the bend...

The cables develop kinked places in the bend between the transom fitting and the actuator housing - especially if the boat is stored with the drive turned to one side.
As people said - it's EITHER...
Forum: General Q & A
02-20-2018, 07:46 PM
Replies: 2
Views: 325
Posted By mcollinstn

Windshield or no windshield? 80mph or 120mph? ...

Windshield or no windshield?
80mph or 120mph?
Square transom or droop transom?

There's no "one answer" on this. Each boat punches a different hole in the air, and even SAME boat at different...
Forum: General Q & A
02-20-2018, 03:54 PM
Replies: 53
Views: 2,908
Posted By mcollinstn

By the way, an OPEN HOLE phenolic spacer may free...

By the way, an OPEN HOLE phenolic spacer may free up a little HP at higher rpm, while also slightly reducing idle vacuum. You mentioned you were running a spacer, but you didn't say whether it was an...
Forum: General Q & A
02-20-2018, 12:04 PM
Replies: 53
Views: 2,908
Posted By mcollinstn

Yes, it definitely is. And a normal...

Yes, it definitely is.
And a normal installation using standard timing set and normal dowels/keys, a person has to figure that the cam will end up more or less at the advertised 110 ICL.

But if...
Forum: General Q & A
02-19-2018, 10:51 AM
Replies: 53
Views: 2,908
Posted By mcollinstn

If you installed it at 110 ICL, then it is NOT...

If you installed it at 110 ICL, then it is NOT installed straight up or 0.
110 ICL means the profile is shifted +4 advanced, which IS what I would have recommended as well.
"Straight up" or 0 would...
Forum: General Q & A
02-16-2018, 07:13 PM
Replies: 53
Views: 2,908
Posted By mcollinstn

I have a question. You mentioned that you...

I have a question.
You mentioned that you installed the cam "straight up", which on a 114 LSA cam, means a 114 ICL..
But your cam specs are based on a +4 installation (114 LSA, 110 ICL).
Not...
Showing results 1 to 25 of 500
 


 
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