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Search: Posts Made By: Unlimited jd
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Forum: Do It Yourself, Boating on a Budget
05-18-2014, 09:15 PM
Replies: 83
Views: 20,725
Posted By Unlimited jd

A pro systems carb with billet base plate and wet...

A pro systems carb with billet base plate and wet flow sheet setup for your app is only $20 more.
Forum: Do It Yourself, Boating on a Budget
05-18-2014, 07:53 AM
Replies: 83
Views: 20,725
Posted By Unlimited jd

It's a free benefit. Swapping the firing order...

It's a free benefit. Swapping the firing order evens out the load on the cam so that lifters are being pushed on opposite sides reducing core deflection. No performance gain at all, just less stress...
Forum: Do It Yourself, Boating on a Budget
05-17-2014, 10:11 PM
Replies: 83
Views: 20,725
Posted By Unlimited jd

My opinion 2-250 hours

My opinion 2-250 hours
Forum: Do It Yourself, Boating on a Budget
05-17-2014, 10:11 PM
Replies: 83
Views: 20,725
Posted By Unlimited jd

Yes same heads

Yes same heads
Forum: Do It Yourself, Boating on a Budget
05-17-2014, 06:13 PM
Replies: 83
Views: 20,725
Posted By Unlimited jd

The 548's cam is a bit more conservative. It was...

The 548's cam is a bit more conservative. It was originally selected for a boat with reversion issues. It made 635 and 660tq
Forum: Do It Yourself, Boating on a Budget
05-16-2014, 10:13 AM
Replies: 83
Views: 20,725
Posted By Unlimited jd

I did on a 548 last week with the same heads and...

I did on a 548 last week with the same heads and quench, same style piston. Power didn't go up, actually lost some at 36* and egt's only dropped a few degrees. Most of these guys fill up on the road...
Forum: Do It Yourself, Boating on a Budget
05-16-2014, 07:32 AM
Replies: 83
Views: 20,725
Posted By Unlimited jd

7lbs of fuel pressure, egt's just broke 1400 at...

7lbs of fuel pressure, egt's just broke 1400 at the top end of the pull. I don't have the sheet in front of me but I think it was 1370? At peak power.
Forum: Do It Yourself, Boating on a Budget
05-15-2014, 10:22 PM
Replies: 83
Views: 20,725
Posted By Unlimited jd

No, by the time it richens up into the 12.4-12.8...

No, by the time it richens up into the 12.4-12.8 range egt's are going to drop 100* or more. Lowering timing will increase egt by starting the burn later and causing the burn to still be on going...
Forum: Do It Yourself, Boating on a Budget
05-15-2014, 05:44 PM
Replies: 83
Views: 20,725
Posted By Unlimited jd

The air/fuel numbers were calculated. Good catch...

The air/fuel numbers were calculated. Good catch sb. A close eye was kept on egt's and we kept jetting up until we did not gain any power. On this dyno mid to high 13's seems to be the sweet spot for...
Forum: Do It Yourself, Boating on a Budget
05-12-2014, 06:00 AM
Replies: 83
Views: 20,725
Posted By Unlimited jd

I had brought my 1000 cfm pro systems carb but...

I had brought my 1000 cfm pro systems carb but since we made the power we were looking for and even if it picked up 30 hp new carbs aren't in the budget, we left it as is. Those are calculated air...
Forum: Do It Yourself, Boating on a Budget
05-11-2014, 07:38 PM
Replies: 83
Views: 20,725
Posted By Unlimited jd

Found the cam card. .645 lift 234 dur intake/...

Found the cam card. .645 lift 234 dur intake/ .640, 240 exhaust. 112 lobe seperation
Forum: Do It Yourself, Boating on a Budget
05-10-2014, 01:39 PM
Replies: 83
Views: 20,725
Posted By Unlimited jd

Open, 1" wood. Consistently worth 10hp on the...

Open, 1" wood. Consistently worth 10hp on the last 3 engines I've tried it on and all the ones the dyno operator has tried. 4 hole typically worth a couple more ft lbs, couple less hp
Forum: Do It Yourself, Boating on a Budget
05-10-2014, 07:02 AM
Replies: 83
Views: 20,725
Posted By Unlimited jd

Less than 10 hp for accessories, dyno exhaust vs...

Less than 10 hp for accessories, dyno exhaust vs marine not sure. I'm welding a bung in the tails for my a/f meter today. May be able to get an idea from how far off the jetting is in the boat
Forum: Do It Yourself, Boating on a Budget
05-10-2014, 05:09 AM
Replies: 83
Views: 20,725
Posted By Unlimited jd

It has wet exhaust, mixes just inside the transom.

It has wet exhaust, mixes just inside the transom.
Forum: Do It Yourself, Boating on a Budget
05-10-2014, 05:08 AM
Replies: 83
Views: 20,725
Posted By Unlimited jd

All of the data is as accurate as it can be from...

All of the data is as accurate as it can be from the super flow. So yes peak ve is 106
Forum: Do It Yourself, Boating on a Budget
05-09-2014, 10:36 AM
Replies: 83
Views: 20,725
Posted By Unlimited jd

91p 96s with 3.5 Pv in primary only

91p 96s with 3.5 Pv in primary only
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