PDA

View Full Version : Who's runnin big Mopars out there?



440jetster
01-10-2001, 02:06 AM
I hardley ever see any big Mopars on the water.Am I the only one? I have a Sleek 23'Daycruzer. I'm building a 400 stroker engine that will have 465 cubes. I hope to turn some nice revs.Anyone else?

sleekcrafter
01-10-2001, 06:01 PM
Hey there, not many Chrysler people left in boats, I have seen a few SB Chrslyer's in jet form 360's and only one BB mopar. I have a 23' Sleekcraft Executive Jet, It came with a 454BB chevy. Work has been ongoing for the past five years and manage to get a good season out of it. Last year's mod's were a 540BBC and an AMT SD-309 pump set-up. She turns 5400rpm's with a AA impeller and is currently running right at 70mph. Good luck on your boat, best reguards, Chuck

440jetster
01-11-2001, 03:53 AM
The sleek daycruzers have the most versitle engine/drive options that I have seen on any performance boat. I chose this hull because it was a jet. A very heavy jet! When I got the boat it ran a solid 53mph with the original 455 Olds/Jacuzzi set up. I did the Chrysler thing to be different. I have seen this boat with dual outboards, V-drive,sterndrive, and jet. I hope to go a little faster this year, maybe 65!

Squirtcha?
01-12-2001, 02:28 PM
<CENTER><IMG
SRC='http://members.nbci.com/_XMCM/***boats/terrnordic2.jpg'

Squirtcha?
01-12-2001, 02:31 PM
<CENTER><IMG>
SRC='http://members.nbci.com/_XMCM/***boats/terrnordic2.jpg'

MoJetBoPar
01-13-2001, 07:00 PM
Hi,
I recently acquired a Mopar powered Jet Boat last August. It is a 18' 1977 Mantra with a 383 big block and Berkeley JG. It took some looking and they do exist but are not common. The plan is to upgrade to a 440 and use the 383 in my 69 Roadrunner eventually. If you don't mind, respond with more detail on your build-up. I am interested to hear more about any V8 Mopar powered boat out there.

440jetster
01-16-2001, 03:24 AM
MoJetBoPar, why go to 440? I think a B engine has more to offer.The RB engines have too much weight on the spinning mass, or too much piston/rod wieght! I chose a 1971 400 engine because it has the largest bore of all the Mopar engines, and I can significantly reduce the piston/rod weight by using a steel 440 crank. I chose Ross semidome at 10.5:1. I have Indy open chamber heads and a Indy offset intake. The beauty of this is in the balencing. Stock 440's are very hard to balence. I found my 400 block for next to nothing. For about three grand I will have a 7000rpm screamer with about 550 horses! That's a jetboat engine.

Squirtcha?
01-16-2001, 07:23 PM
Hate to tell you this but, you're probably not going to see 7000 rpm with your engine, unless you run a cut impeller (B or BC). According to the Berkeley charts you'll only be turning 5600 rpm with an A impeller and 550 horsepower. When you build your motor keep in mind that the pump is going to limit your rpm (like it or not) and you need to have your peak horsepower and torque come in aroud the 5500-5700 rpm mark. Although the charts just give a ball park figure, I find that they're not too far off.

Squirtcha?
01-16-2001, 08:04 PM
Mopar fans. Do a copy and paste of this web address to see a really clean, great looking 440 mopar installed in a jetboat.
http://members.nbci.com/_XMCM/***boats/terrnordic2.jpg

MoJetBoPar
01-16-2001, 09:15 PM
While I applaud you're engine build-up, it is something a drag car with minimal rolling resistance can most appreciate. As Squirtcha? stated you have to realize the rpm band that your boat will most often be in. I'm new to the jet boat hobby myself but have had Mopars for 17 years and from what I've learned recently is that you want to create major torque to move that boat thru the water. Cubes rule! Speaking of which, a 400 w/440 crank is around 444 cubes, give or take an overbore, isn't it? The advantage of your pkg is the lighter reciprocating mass and an allegedly lighter block (read the latest Mopar Action for more detail). Granted less reciprocating mass= freed up HP. Usually something a drag racer is looking for. A stroker crank with 496 cubes would be the happening set-up. That would move the Day Cruizer thru the water. Myself, I'm on a budget, so I'll drag a 440 out of the barn, either overbore or toss on the closed chamber milled heads to get about 9.0:1 compression and proceed to run it relentlessly. My hull is a rather light retro/drag 18' Mantra that has a loader/ride plate,shoe and now a droop snoot. It actually feels like the loader needs to be trimmed back because the faster it went the more stable it rode and from what I've gathered it should have a slightly unstable feel if right. First time out I beat a 18' similar boat but with a "Clamp-on" 200 hp Merc, 4 people on his boat, just me on mine. Not too bad but it needs to go faster. I do have a adjustable NOS Cheater set-up I'm thinking about installing (125hp stage only/cast pistons). Any thoughts on that or would it be better served on my 69 Roadrunner(440)?

440jetster
01-17-2001, 04:16 AM
I forgot to add in the load factor.I rated my engine in static rpm/hp.I see what your saying about impeller size/cut.I originally wanted to run a 6-71 blower, but my pockets hit bottom too soon. Cp performance told me to use or start with an A cut for best all around performance. I will experiment this summer.The 440 engine is good, but difficult to balence in stock form. I have vibration problems, so I switched to the 400 block. I talked a guy in Canada who has great success with the B-1 engine. Jet boats kind of perform like drag cars. Your either on it or not, no gears to hide the imperfections!Life is great!!

Squirtcha?
01-17-2001, 06:44 AM
http://members.nbci.com/_XMCM/***boats/terrnordic2.jpg

MoJetBoPar
01-17-2001, 09:49 AM
Hey squirtcha?,
I can't seem to call up that pic of this boat your talking about. I even tried typing in the whole message. Any tips?
Hey 440Jetster,
Did you have the 440 cranks rod journals offset ground to accomodate Chevy rods and a .990 pin for the extra cubes? Thats the only way I can figure how you ended up with all those cubes w/o welding up a stroker or adding in a new casting. Which Indy heads are you running? You might want to check into talking to a few boat engine builders before choosing your cam too.

Squirtcha?
01-17-2001, 02:10 PM
I see what you mean. It's giving me fits too. Try this, click on the link and it'll try to find it. Let it look until it tells you (cannnot display) then click on refresh. For some reason it comes up then. Here's the link again.
http://members.nbci.com/_XMCM/***boats/terrnordic2.jpg

Squirtcha?
01-17-2001, 02:36 PM
O.K. last time on the picture deal. Go to my post with the spinning Xoom symbol. On the top you'll see a symbol (letter with a red arrow) click on that then hit the back button. If it doesn't work after that I give up.

Squirtcha?
01-17-2001, 02:43 PM
That one seems to work like that here's another one.
http://members.nbci.com/_XMCM/***boats/terrnordic.jpg

MoJetBoPar
01-17-2001, 04:29 PM
Hey Squirtcha?,
Thanks! Sorry about all the effort required to post. Yeah, I've seen that boat on that really cool website "RealJetBoats". Veeeery nice. Mine is basically shaped the same except the rear deck has the older style rolled transom, no corners. His has a whole lot nicer paint and interior. Mine is red w/white interior. I gotta get some pic's to that website when it comes outta the barn this spring. Thanks again.

Squirtcha?
01-17-2001, 10:55 PM
I was just kinda playing around anyway. So you already know about RealJetBoats. MikeC the guy that owns/runs the site and I boat together. It is definitely a good resource for jetboaters. Just keep after your machine. Do what you can, when you can afford it, and before you know it, yours will be every bit as nice as the one above. I applaud the fact that you're doing it just a little bit different than most. I used to own a 69 Dodge Charger RT with a 440, cam, headers, 850 double pumper, 4.11 posi rear end etc. It weighed a ton but handled great and ran like a molested ape. It'll definitely raise a few jetboat eyebrows when they see it.

MoJetBoPar
01-18-2001, 07:38 AM
Hey Squitcha?,
The next time you see your buddy tell him he has a helluva website and Thank You. I've wanted a ***boat since I was a kid and now I'm pushing 40. Upon finding his site, it has educated me immensely on maintenance,tech. and terminology. The only other source being ***boat magazines Jet Tech column (better give em a plug).
I'm going for a retro look with this hull I've got now. Gonna get rid of the home made over-the-transom headers, that are aluminized/ugly, and go thru transom style. I scored on a set of Nicson risers (dirt cheap) and before I knew Glenwood marine still stocked aluminum log-style headers (and risers) I had worked a deal on some cast iron manifolds. Not the ideal confiquration but it will work till I can spring for the Glenwood arrangement and I've got to quiet the boat down for family use. Eventually want to go to a low-riser dual 4 barrel edelbrock set-up. Again not state-of-the-art, but awesome retro.
Ps- Is your boat "Ratsquirt"? That one has a nice hull styling with the dash forward of the pass. side.

440jetster
01-18-2001, 07:57 AM
MoJetBoPar, I contacted my parts guy and asked about the math on the "B" engine, and his kit makes a 451 cubic inch out of a standard bore 400. The 400 has more meat in the bores and has a 4.35inch bore verses the 440's 4.32inch. You can take a 400 out to .060 max. I'm going out .040. Mopar performance makes a new steel 4.125inch crank, which will allow a 400 to go up to 474cubic inch!! I'm baffeled at this too. The rods are made by Eagle, I cringe at the thought of having GM parts in my Mopar. I collect Mopars also, I have a 79' LiL red Express, 70'Roadrunner, 71' Demon, and had a nice 69' Charger R/T SE 4spd that my wife made me part with, so I bought my boat to sooth the pain! Check out Muscle motors web site, he has some cool stuff at great prices. Go to www.musclemotorsracing.com (http://www.musclemotorsracing.com) it might answer more of your questions. My boat pic is at www.rebelyello.homestead.com. (http://www.rebelyello.homestead.com.)

Squirtcha?
01-18-2001, 08:01 AM
Nope mine's Squirtcha? Here's a link, you've probably seen it before. My buddy and I got a small feature in ***boat Cove. Mine's not even done yet but it looks o.k. considering it was pretty much a piece of crap when I bought it(Kudos to the photographer for making it look o.k). He was a true professional.
http://homestead.com/jetboat/jetboats.html
http://free.***boat.net/hbcove/22/2/index.htm

Squirtcha?
01-18-2001, 08:22 AM
Hey MoJetBoPar
You're from michigan? I was born in Pontiac, then moved north to Escanaba from '69 to '76. Where's Holly at? Small world aint it? 70 Marlin and GregD are also from Michigan. Marlin is from down state and Greg is from the U.P. like me.

MoJetBoPar
01-18-2001, 10:13 AM
Hey Squirtcha,
Yeah, I've seen your boat. Those Kachina's are very nice. It's killin me to think about how long your boating season is out there.
Holly is about 15 miles NW of Pontiac on I-75. I grew up in the west side suburbs of Detroit which may explain my passion for 60's/70's era toys (boats,muscle cars & sportsters).

MoJetBoPar
01-18-2001, 10:23 AM
Hey 440Jetster,
I'm familiar with the factory specs and and MuscleMotors pkgs (451/474) for the 400/440's, but the 465c.i. configuration was new to me. I haven't looked at a Mopar Perf. catalog in a long time but they used to offer a 4.15 stroker crank. It sounds like they have expanded their crank selection. I couldn't find your photo, am interested in seeing it. Sounds like you are a Mopar man judging form the affore mentioned samples you have. Have you checked out the website www.Moparts.com? (http://www.Moparts.com?) There is a discussion board that is very active and very informative. Some veteran Mopar modifiers on there. My name on there is GTSport69 since I have a 69 GTS 340 Dart too.

440jetster
01-19-2001, 10:01 PM
My web page address is wrong. It's http://www.rebelyello.homestead.com/index.html. This should work. This picture is old, taken in 1998 at Pleasant. I just got the boat, and have totally changed the interior and engine. I want to wait till it's complete before I post my album. I saw that boat on the above nbci site, nice touch with the air scoop!! I would like to know who's boat it is to find out which manifolds they are using. The risers were Harman marine, but couldn't see the rest. I'm going with Edelbrock logs by Nicson, but want to upgrage to a pair of Hi power stainless marine center collector types to get rid of the power robbing risers. They are $1,400 a pair, so maybe next year!

MoJetBoPar
01-20-2001, 08:54 AM
No luck on the website link. Thanks anyways. I was wondering what you had planned for exhaust. As mentioned, Glenwood Marine (Glen-l.com) has the old log-style headers. The aftermarket Hi-perf. suppliers like BoostPower can manufacture/fabricate H20 injected headers of the style you mentioned, but did you mean there is an off-the-shelf cast water-jacketed center-rise manifold available? I might be interested in those too.

Squirtcha?
01-20-2001, 06:31 PM
Here ya go Mo this will work for 440jetster's
page.
http://www.rebelyello.homestead.com/

Squirtcha?
01-20-2001, 06:41 PM
Hey 440 I signed your guest book but screwed up and did it twice. Do me a favor and get rid of one of those will ya? I'm heading up to Pleasant tomorrow Sunday the 21st of January, if you get a chance, come on up. I didn't realize you were from Arizona too. Oh yeah your email on the webpage doesn't work either.

MoJetBoPar
01-20-2001, 07:46 PM
Originally posted by Squirtcha?:
Here ya go Mo this will work for 440jetster's
page.
http://www.rebelyello.homestead.com/
Thanks Squirtcha?,
I'm not very PC savvy. Nice Daycruzer 440Jetster, that Mopar big block midrange torque is just what ya need.

440jetster
01-23-2001, 06:51 AM
I can't find the hipower stainless marine website, and I tried to send an e-mail and it was returned. Man, those were super clean high polished manifolds. I will try calling him, he is located in Canada. I'm not having any luck with Glenwood marine's website. Do you know of a phone number or where the company is located I can contact them. I need some hardware items. Squirtya, my boat is down, i'm putting in the new Berkeley drive, building a new engine, painting, you name it. I usually don't go out in the off season. Last year we did an overniter at Humbug in April, then went to Parker for cinco de mayo.I plan to be finished by April for the poker run at Havasu.

MoJetBoPar
01-23-2001, 05:05 PM
Sorry dude,
Just went to their site. It's at www.glen-l.com (http://www.glen-l.com) like as in glen-little "L".com. I used to think it was an I for a while if that's what your thinking.
Here's the address:
Glen-L Marine Designs
9152 Rosencrans Ave.
P O BOX 1804WA
Bellflower CA 90706
(562)630-6258 or FAX=(562)630-6280
e-mail=info@glen-l.com

Squirtcha?
01-23-2001, 09:18 PM
440Jetster, which pokerrun are you talking about? If it's the Arizona***boat one we'll see ya there. That's one of our annual trips. Good luck on the project. Oh yeah incidently, what's an off season? Snicker snicker.