SoCal Jet Boats
Tech Talk => Engine Mechanical / Electrical => Topic started by: Wakedodger on March 13, 2015, 06:50:01 AM
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Hey guys wondering what I should do...I have a Tahiti 16' low pro with a 455 (which is out of a car) Has J heads...stock intake with a qjet. I picked up A set of KA heads, a cam(not sure of the size and going to have a machine shop check it out first of course) and a edelbrock torker manifold...I still need to get a new carb and a pan but my main question is what parts should I put on, cause Im not going to touch the bottom end...I just don't want to dive that deep right now and hopefully in one or two seasons I am going to completely rebuild it. Should I just drop that manifold and new carb on and use it until I rebuild it or? Any help would be great. Thanks!
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If u don't do all the oiling mods it won't last 1 season it cost triple to build an old over a chevy
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If u don't do all the oiling mods it won't last 1 season it cost triple to build an old over a chevy
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Not true i have no oil mods except a 12qrt pan and my boat runs fine at 5200 for the last 10 years. Just did external oil drains so i can run at 5k all day for the next 10 years
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Restricting isnt the answerthe biggest thing is getting the oil back to the pan
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Restricking oil flow = more oil in pan
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Did u flow mondello Specs
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Full roller cam and victor jr intake will give 125 hp guaranteed restriction of the main's restricting push rods When I run mine I don't have a prob with to much oil on top end
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Not true i have no oil mods except a 12qrt pan and my boat runs fine at 5200 for the last 10 years. Just did external oil drains so i can run at 5k all day for the next 10 years
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I was thinking about drilling out the oil drain backs in the heads for external drainage...you do that yourself or have a shop do that?
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I was thinking about drilling out the oil drain backs in the heads for external drainage...you do that yourself or have a shop do that?
Did it my self super easy use a 3/8 npt tap just take your time
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Heres measurements
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Thanks for that...probably try it on my J heads first :D
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Restricting isnt the answerthe biggest thing is getting the oil back to the pan
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I agree with Bunger the oil restrictions is not the answer. My Olds blew up do to the lack of oil.
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Well lack of oil and a bad builder.
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My buddy has 832 hp olds Follow mondello guides on building a 455 olds
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My buddy has 832 hp olds Follow mondello guides on building a 455 olds
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You got alot of faith in this mondello guy huh?
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If u have a 455 he is the God of olds so yes
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His nick name is dr olds
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You got alot of faith in this mondello guy huh?
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The guy he's referring to is not even a mondello.
Joe mondello passed away a few years ago, and his son Bernard is doing a whole other deal out in corona.
Mondello twister is run by a bunch of goons!
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So I should go ahead and throw this new top end on...
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Listen to rushin he knows
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You got alot of faith in this mondello guy huh?
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Very true :beer:
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Rushin is right about his Mondello facts. The old man is dead. Joe Mondello passed away in 2011. After leaving so Cal he moved to Paso Robles and opened Mondello Technical School. He later moved it to Crossville TN. By the time he left L.A. his son Bernard was operating his own deal known as Bernard Mondello Racing Engines, currently operating out of a hole in the wall in Corona. His reputation in the industry is not good at all. Terrible businessman and not half the innovator his father was.
Much of the assembly and machine work that made old Joe famous was done by Danny Roslan who operates Danny Roslan Performance in Paso. The last phone number I had was (805)235-1974. He is the "guy" in this area of the country.
And if you want to get an idea of exactly what it takes to build 500, 600, 800 HP with the real world E.T.'s and dyno sheets you could spend a lot of time here http://realoldspower.prophpbb.com/forum12.html (http://realoldspower.prophpbb.com/forum12.html) I know I did.
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Im just stoked to dee another olds guy out here lol
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See *
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Cam specs
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This is what im running for a cam its solid roller if you need anything feel free to ask i have alott of olds stuff around and know a little about them.
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Also im running dry ot headers
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Also get rid of stock rockers asap i havent read the post so sorry if thats been said
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The guy he's referring to is not even a mondello.
Joe mondello passed away a few years ago, and his son Bernard is doing a whole other deal out in corona.
Mondello twister is run by a bunch of goons!
Rushin is right about his Mondello facts. The old man is dead. Joe Mondello passed away in 2011. After leaving so Cal he moved to Paso Robles and opened Mondello Technical School. He later moved it to Crossville TN. By the time he left L.A. his son Bernard was operating his own deal known as Bernard Mondello Racing Engines, currently operating out of a hole in the wall in Corona. His reputation in the industry is not good at all. Terrible businessman and not half the innovator his father was.
Much of the assembly and machine work that made old Joe famous was done by Danny Roslan who operates Danny Roslan Performance in Paso. The last phone number I had was (805)237-1974. He is the "guy" in this area of the country.
And if you want to get an idea of exactly what it takes to build 500, 600, 800 HP with the real world E.T.'s and dyno sheets you could spend a lot of time here http://realoldspower.prophpbb.com/forum12.html (http://realoldspower.prophpbb.com/forum12.html) I know I did.
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That site is awesome
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Also get rid of stock rockers asap i havent read the post so sorry if thats been said
Whats wrong with stock rockers?
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The fulcrums fail at any kinda rpm the good news is instead of over paying for olds rockers 302 rockers go jn just stud if and run rollers after a fulcrums fails your motor may or may not be trashed ive pushed pushrods thru rockers with that set up and a cam comparable to an rv cam in a bbc
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Also you cant really adjust valve lash
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In and it*big thumbs and new phone lol
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In and it*big thumbs and new phone lol
Ive got adjustable push rods. What rpm r the stockers good for? I cant run over 5100 with my current setup
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I dont know off the top of my head but in my opinion i wouldnt be comfortable over 4600-4700 but thats just me on that set up i was only able to turn 5300 at wot and most of my issues came above 4500 my rocker arm failures were all around the 4800 ranage but that was also after a few quick bursts to 5-5300 also iv never had my boat come out of the water and unload the pump but i would recodmend doing everything possible not to let it.
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It also depends on spring pressure
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And if i remember correctly the fulcrum bolt thrwads are only a 5/16 course but dont quote me on that as i dont remember for sure
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And if i remember correctly the fulcrum bolt thrwads are only a 5/16 course but dont quote me on that as i dont remember for sure
Hmm maybe ill look into some rollers pretty soon. Ive ran the boat hard. Its seen quite a bit of wot at 5100 and never had a problem except one trip last summer i held it so long i pump the valve covers full of oil and it filled my puke tank and covered my whole transom 😳. When i went through the motor last year i did have one rocker bolt break when i was torqueing it. I replaced all 16 and havent had a problem
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Ya i would even if its just the roller tip rocker and screw in studs i drilled and tapped my heads for 7/16 studs but im also running a roller cam and more spring pressure to go with it i don't think you need to go that far. Let me see if i can find my old studs and if i can you can have them if you pick them up.
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Ya i would even if its just the roller tip rocker and screw in studs i drilled and tapped my heads for 7/16 studs but im also running a roller cam and more spring pressure to go with it i don't think you need to go that far. Let me see if i can find my old studs and if i can you can have them if you pick them up.
Oh sweet that'd be rad
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Ya lemme see if i can track them down how close to winchester are you?
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Gonna try to find them tomorrow ill let you know what i come up with.
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Gonna try to find them tomorrow ill let you know what i come up with.
Im up in oc. yorba linda. Don't make my way down there too often but may be able to make it happen
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Alright
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It was brought to my attention by the man himself that the phone number I posted for Danny Roslan's Performance shop was wrong and I have corrected it above. If'n any of you guys want a fast reliable Olds, don't waste money with Mondello or anyone else. Go the the guy who actually does the work. He's in Paso but he will build stuff for anyone. Give him a call at 805-237-1974