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I am having problems locating a 950 carb but have found a few 1050's. However have been told that you can't run a 1050cfm/4500 on a 4150 style intake which would commonly accept a 950cfm can you run the 1050/4500 carb on 4150 style intake? Does anyone make an adapter?
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I am having problems locating a 950 carb but have found a few 1050's. However have been told that you can't run a 1050cfm/4500 on a 4150 style intake which would commonly accept a 950cfm can you run the 1050/4500 carb on 4150 style intake? Does anyone make an adapter?
You ca buy an adapter 4500 to 4150 and yes they make them ran one on the Nurple.
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Double D-
You can run an adapter to run a 4150 carb on a 4500 style manifold, you can run a 4500 style carb adapted down to a 4150 intake, but you're totally defeating the purpose of the 4500 style carb. Bottom line is, either find and buy a 950 or get another intake.
Skip
PS- going out early Friday morning, you up for it?
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I'd love to go out this friday but I either am going to have to work (all weekend) or will be up in shaver.
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I am having problems locating a 950 carb but have found a few 1050's. However have been told that you can't run a 1050cfm/4500 on a 4150 style intake which would commonly accept a 950cfm can you run the 1050/4500 carb on 4150 style intake? Does anyone make an adapter?
If you decide to buy an intake, I have a really nice Wieand Team G,, polished, new in the box, $350. Ask Luckie Stiff about them, he got one from me.
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Damnit DJ. Don't you know you're not supposed to be working on the days I want to go to the lake? The way my heap runs I always need the assurance of a tow boat! ;) Shaver would be sweet :thumbup:, Belridge, not so much :thumbdown:.
Oh yeah, if you end up buying another intake, get in touch with Barry, he'll hook you up, that's where mine came from :thumbup: :thumbup:
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Running my new 1050 dominator on my Blower shop 4150 single carb top with a 4500 to 4150 3" adaptor with no apparent ill effects ;)
adaptors from Summit (cheap)
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi147.photobucket.com%2Falbums%2Fr319%2Fjetboatperformance%2FEliminator%2520V-drive%2FDSC04427.jpg&hash=a9230e3963094960bc3a112af15319b54dfd8eb5)
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Running my new 1050 dominator on my Blower shop 4150 single carb top with a 4500 to 4150 3" adaptor with no apparent ill effects ;)
adaptors from Summit (cheap)
That adapter would be hardly noticeable if you'd polish it ;D Where's the quality control? ;)
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Running my new 1050 dominator on my Blower shop 4150 single carb top with a 4500 to 4150 3" adaptor with no apparent ill effects ;)
adaptors from Summit (cheap)
You don't think that adapter is defeating the purpose of the 1050 CFM carb? Really? Explain this theory to me Tommy, I want to learn.
Skip
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Running my new 1050 dominator on my Blower shop 4150 single carb top with a 4500 to 4150 3" adaptor with no apparent ill effects ;)
adaptors from Summit (cheap)
You don't think that adapter is defeating the purpose of the 1050 CFM carb? Really? Explain this theory to me Tommy, I want to learn.
Skip
Skip you got me ! , I got no theory to support or explain ! the difference between the 4500 and the 4150 ends the adaptor are negligable (opening vs opening ), might have lost a few HP ?? dont know cant prove or disapprove , just know the big boat runs like a "scalded dog" some day when I have the time and ambition and inclination I'll order up a differerant Blower top and see if theres any noticable difference . alls I do know is the 1000 HP series vs the 1050 Dominator is night and day . Could it run better with a slightly larger opening at the base ? maybe but then this is my family boat and 70 plus for a "Battle star" is pretty respectable no ? , ;) Tommy
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What should my fuel psi be at idle, 3k, and 5k?
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a 1250 dominator on a 4150 victor manifold, works good, world maks a in cast manifold adapted down from dom to reg style ports,
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Only dyno tested this theory once, on a small block Mopar. 4150 intake, went from an 850 to a 1050 and gained 15hp, for 585hp... Don't know exactly the "hows and whys" but possibly it just needed more air and fuel :-\
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Tommy-
I guess it's one of those things that nobody can explain, it just works. See I told you I wanted to learn something and I did, thanks :thumbup:
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In theory it shouldnt hurt skip.
The way I see it , it is as simple as measuring carb bores versus the opening at the bottom of the carb adapter and seeing how far off , if at all, they are form one another.
Not to mention, if you lose anything, you might gain it back from the increase in air speed velocity.
Just my brain tickin....
-beerjet-
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you might gain it back from the increase in air speed velocity.
Just my brain tickin....
-beerjet-
After thinking about it, I agree with the increased air speed, but it still baffles me that it won't hurt performance ???
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After thinking about it, I agree with the increased air speed, but it still baffles me that it won't hurt performance ???
Well , I'm gonna make a phone call tomorrow about the diffrence in the dom bores vs 4150 plate opening. I'm gonna guess they are really close .
-beerjet-
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Slightly "off topic" but "not so much" despite all the Ph*kin* nuttyness at JBP heres Joshes new Austrailian (SWTG Dominator ) manifold and AED "Dommy" for the 408 Windor stroker from ...today Tom (new Rewarder "step headers too)
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi147.photobucket.com%2Falbums%2Fr319%2Fjetboatperformance%2Fjosh%2FDSC04922.jpg&hash=baf250dce9b4693c47e9f6016615369d99a1e10f)
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi147.photobucket.com%2Falbums%2Fr319%2Fjetboatperformance%2Fjosh%2FDSC04923.jpg&hash=49d3a999779c11dd3c9a6c96bc833a3470557e4a)
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After thinking about it, I agree with the increased air speed, but it still baffles me that it won't hurt performance ???
Look in the new Engine Masters Magazine, perfect test to read up on.
On a BBC they tested...
4150 intake, with 4150 carb vs.
4150 Intake, with a 4500 adapted carb vs.
4500 intake, with a 4150 carb vs.
4500 intake, with 4500 carb
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Look in the new Engine Masters Magazine, perfect test to read up on.
On a BBC they tested...
4150 intake, with 4150 carb vs.
4150 Intake, with a 4500 adapted carb vs.
4500 intake, with a 4150 carb vs.
4500 intake, with 4500 carb
Dyin' to see the "link" common T the suspense is too much ?? please post it if you have it Tom
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Dyin' to see the "link" common T the suspense is too much ?? please post it if you have it Tom
Don't got the article on me :-\ But all of the results were within 15hp of each other, I remember that
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http://fuelcurvewest.net/home
Dj I was at Dave's shop today He's has 1050 cfm carbs in a 4150 bolt pattern, give him a call.
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Well , I'm gonna make a phone call tomorrow about the diffrence in the dom bores vs 4150 plate opening. I'm gonna guess they are really close .
-beerjet-
Define Close...
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi8.photobucket.com%2Falbums%2Fa36%2Fluckiestiff%2F2009-07-01202039-1.jpg&hash=b2e52745ae02aef54d453e1742f2b5088d7084e3)
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LOL Dj just might have to save some money and swap out the the intake and carb, what is he running a 502 BBC and some alum heads?
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LOL Dj just might have to save some money and swap out the the intake and carb, what is he running a 502 BBC and some alum heads?
Yep 502HP 502, Aluminum heads, rumpity cam, needs a bigger carb and intake
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Define Close...
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi8.photobucket.com%2Falbums%2Fa36%2Fluckiestiff%2F2009-07-01202039-1.jpg&hash=b2e52745ae02aef54d453e1742f2b5088d7084e3)
Close as in , 4150 flange gasket since thats what these four holes are going to flow through. A Dominator does not flow air in a square shape (as in the case of the 4500 "gasket") Its flowing air through this.....
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fwww.rpmcat.com%2Fimages%2FG12-58B.jpg&hash=da7c1906bb3896b29967073816f105995b26c1db)
And then into the square shape of the 4150 flange gasket, open plenum, or whatever .
I'm probably not explaining this very well am I. :-\
-beerjet-
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Omar-
I'm smellin' what you're stepping in, but even using 4 hole gaskets as the base math, the difference in the venturi size alone is .314" or 5/16" larger in each venturi, the throttle bore is .250" or 1/4" larger, if you add that all up you have a carb that has a total venturi size 1.25" larger than the other, and 1.00" larger throttle bore. Maybe I'm missing something , and I'd be stoked if someone could explain it to me, but I can't see any gain by using a 4500 carb on a 4150 intake, it just doesn't make sense ???
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i ran the adapter on the race boat :-[ and we aint racin dyno's so even if i was losing 50 hp i didn't miss it.
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Omar-
I'm smellin' what you're stepping in, but even using 4 hole gaskets as the base math, the difference in the venturi size alone is .314" or 5/16" larger in each venturi, the throttle bore is .250" or 1/4" larger, if you add that all up you have a carb that has a total venturi size 1.25" larger than the other, and 1.00" larger throttle bore. Maybe I'm missing something , and I'd be stoked if someone could explain it to me, but I can't see any gain by using a 4500 carb on a 4150 intake, it just doesn't make sense ???
I think the gain would be going from a 4150 carb to utilizing the entire 4150 plenum since the dominator will use the entire space.
You are absolutly right about the dominator being more than the 4150 flange will flow but in the same token you are using the entire space versus about 70 percent of it .
It really comes down to getting the most out of what you have.
If that means using an adapter on the 4150 flange , your technically not "losing" anything .
I think of it more as maxing out what you have.
Kind of like cylinder heads when you've reach their max.
I dont think your losing anything , you've just maxed out your combo.
Now is that the best combo, probably not but it is what it is 8)
-beerjet-
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Just remember, you can compare venturi's since you not flowing from a 4500 through a 4150.
Your flowing through the 4500's venturi's, then through a 4150 flange opening.
That should make it a little "closer" ;D
-beerjet-
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the 70% deal made it click for me, thanks O. I lernded sumpin toodae
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Even with the throttle bores at 2" on the 4500 that comes out to 12.564 sq. in. surface area.
4150 flange flowable area is 12.25 sq in.
I really hope someone will correct me if my math is wrong :-X
-beerjet-
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i ran the adapter on the race boat :-[ and we aint racin dyno's so even if i was losing 50 hp i didn't miss it.
;) Kind of been my point !
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Hey guys - using a dominator adapter on a 4150 manifold makes MORE power than using a dominator style intake with or without a spacer.
Don't know why, but I've seen it time and time again on the dyno. My friends and I don't even bother with the dom intakes anymore...
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Josh picked up the "Engine Masters" book with the "article" at the Super market this past week end , I'm waiting to read the results I will post up ASAP Tom
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Josh picked up the "Engine Masters" book with the "article" at the Super market this past week end , I'm waiting to read the results I will post up ASAP Tom
LOL, went by 3 places to pick up the magazine just to post "their" results, great minds think alike ;D
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Josh picked up the "Engine Masters" book with the "article" at the Super market this past week end , I'm waiting to read the results I will post up ASAP Tom
Tick tock tick tock ;D
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Not a lot of time to completley "digest" this info but heres some "food for thought"
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi147.photobucket.com%2Falbums%2Fr319%2Fjetboatperformance%2FDSC05100.jpg&hash=0634e0ee68c903e80907aa95980a37483ae4318b)
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Interesting.......................
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I am only at 502hp though. I am not even close to those numbers
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Because theres to much info to copy (should hire Jetaholic hes good at that :sly: ) I picked the "stats" from one RPM phase only!` @ 5K heres the scoop T! is 607 hp T2 is 607 HP T3 is 606 T4 is 613 ans T5 was 618
T1 was 1000hp on 4150 intake = 607
T2 was 1000hp on " " " with a 1inch spacer = 607
T3 was the 1050 on the same intake with the adaptor = 606
T4 was the 1050 on a Team G 4500 intake = 613
T5 was the 1050 " " " " " " with a one inch spacer = 618
Whats the bottom line I'm happier than Pigs in poop with My domy on my cheesy adaptor the mere size of it gives me wood :D
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Interesting........
;D
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should no by next weekend
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(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fs603.photobucket.com%2Falbums%2Ftt115%2Flalastarrr%2Femoticon%2Fth_thlaughing-smiley-007.gif&hash=a399631937c8543420eb0ac14b16244a8601e8d8)(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fs603.photobucket.com%2Falbums%2Ftt115%2Flalastarrr%2Femoticon%2Fth_thlaughing-smiley-007.gif&hash=a399631937c8543420eb0ac14b16244a8601e8d8)
(should hire Jetaholic hes good at that :sly: )
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Didn't buy the magazine, but read the results again today at Checkers. I went past 5000rpm though >:D
The 4150 on 4150 intake got beat by about 8hp by the 4500 carb on the 4150 intake. The carb they were comparing on the part Tom posted was a special shop built 850 over 850 cfm... can't remember the number now though lol. But the best performer was still the 4500 with spacer on the 4500 intake, made about 14hp more than the 4500 carb on the 4150.
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But then again, just like Donjuan said, only way to see if it makes a difference is to try it, only takes 10 minutes max at the ramp, and a GPS.... but remember you want to shoot for max RPM not max MPH (thank you jetaholic ;D)
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Maybe "Jeta -Jedi" the Text copying Cyber web warrior will be lurking and copy cut and paste some cool "tuning info" on this subject ;D
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So what I'm getting from this extended exercize is that switching the intake to a 4500 Dom intake when using a dom carb instead of the adaptor on a 4150 style intake MAY be worth 14 or so HP? (Less on the scale Tom posted, only 6 HP).
I dunno much about technicals on boats, but I do know cars and a 10HP change can only be felt by the best of them. I would imagine even 14-20 HP increase would be hard to notice except on the extreme ends.
So therein lies the quagmire, why do they sell Dominator intakes at all? lol (Seems lke a waste of time and money to do so from a manufacturers standpoint).
Ray
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Well, now that one is put to bed, I have another question.........
If a train leaves Boston headed south west at 50 MPH, is the Patriots Fan on board the train still a Jack Ass?
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Only if the Pats are playing anyone on the West Cost in a non-playoff game or super bowl.
Then 'YES" :thumbup:
Ray
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So what I'm getting from this extended exercize is that switching the intake to a 4500 Dom intake when using a dom carb instead of the adaptor on a 4150 style intake MAY be worth 14 or so HP? (Less on the scale Tom posted, only 6 HP).
I dunno much about technicals on boats, but I do know cars and a 10HP change can only be felt by the best of them. I would imagine even 14-20 HP increase would be hard to notice except on the extreme ends.
So therein lies the quagmire, why do they sell Dominator intakes at all? lol (Seems lke a waste of time and money to do so from a manufacturers standpoint).
Ray
On a 750hp 496 like they used in the magazine it could be worth that much :thumbup: I tried a swap from 850 to 1050 on a small block mopar on the dyno, and it gained..... but that was on the dyno. I've only tried once on a boat swapping from an 850 to a 1050 and it lost MPH, but I think alot had to do with the low RPM it spun, and not so large cubic inch
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Was that 14 hp gain on a 1000 hp motor?
Lets say DJ's 500 hp motor spits out 7 more ponies.
KNOWING this, makes it not even worth the hassle, IMO.
Unless your drag racing and lookin for every single drop.
-beerjet-