Since Im new to this whole Jet boat experience, Iv been reading alot to figure out what to buy. I have a few questions though.. Like whats the difference between an A impeller and a B? Why are some made of bronze and some stainless? Also, I found some headers for a BBC and was wondering if its a good deal or not. Theyre basset with the ports in the bottom for water, but no lines. They're shorter than most of the headers Iv seen and a little beat up, will need a refinish. But moneys tight and the guy wants $200. Worth it? Thanks in advance for any info!
Since Im new to this whole Jet boat experience, Iv been reading alot to figure out what to buy. I have a few questions though.. Like whats the difference between an A impeller and a B?The difference without getting too deep is the length of the vanes, a longer vane means it will move more water per revolution, absorbing more HP and theoretically more water
Why are some made of bronze and some stainless?Primarily cost, the stainless impellers are difficult and expensive to do but very very strong, a bronze is much easier to cast, but stronger than an aluminum.
Also, I found some headers for a BBC and was wondering if its a good deal or not. Theyre basset with the ports in the bottom for water, but no lines. They're shorter than most of the headers Iv seen and a little beat up, will need a refinish. But moneys tight and the guy wants $200. Worth it?
Well, Sold the Rhino today. Sad to watch it leave but now I have boat cash! Picked up the 454 for 300 bones. Now the fun begins. Need a few things.. but what else do you guys recomend getting? So far its valve covers, intake/carb, scoop, high quart oil pan.. I think Im going to need a bellhousing and whatever parts connect the motor to the U-Joints on the jet. Id also like to get the motor rails to make it easier to pull later on. I have engine plates. Need a distributor, buy expensive or buy factory Chev? Iv heard alot about getting a cam.. your thought on that? It looks like I have all waterlines to hook up the motor. Anything else off the top of your heads?
Cool. The pan I have is out of a truck. Looks pretty big. I know the more oil the better, but Im just trying to go for the essentials for the time being.
Well, Sold the Rhino today. Sad to watch it leave but now I have boat cash! Picked up the 454 for 300 bones. Now the fun begins. Need a few things.. but what else do you guys recomend getting? So far its valve covers, intake/carb, scoop, high quart oil pan.. I think Im going to need a bellhousing and whatever parts connect the motor to the U-Joints on the jet. Id also like to get the motor rails to make it easier to pull later on. I have engine plates. Need a distributor, buy expensive or buy factory Chev? Iv heard alot about getting a cam.. your thought on that? It looks like I have all waterlines to hook up the motor. Anything else off the top of your heads?
Just off the top of my head , It is a BBC so the number to vessel assist will most likely come in to play sooner or later! ;D
Started to tear into the motor today... Got this casting number off the heads, 346236, I looked em up and it says open chamber peanut ports.. I have a feeling that isnt good. That also means that Im going to have to get an intake for round port correct?
You will need to check the depth, a jet with a standard driveline can have clearance issues.
I like the Dooley pans and have seen them priced right used.. :thumbup: But Hamburgers are prettier. ;)
GT
I love the Dooley pan on the Pickle! PLENTY of clearance compared to the Milodon I put on Moo, but man are they pricey! This is the first I'm hearing on the Hamburger pans. Would love to see some detailed pics of one.
Looks like all good suggestions. Yeah, I would dump the heads and find some 990's or better. Ton's of good oval ports out there and can run with the best of 'em. Here's a pretty good deal I was lookin at for myself!
http://phoenix.craigslist.org/evl/pts/1624577413.html
Rect ports are great, but bring a fat wallet for the good ones. Personally, unless you are restoring a classic 'Vette or Chevelle, I'd leave 'em be and go aluminum.
Ray
990's on flattop pistons no bueno.. :thumbdown:
I have the heads you need for flattops...Find out what pistons you have or are going to use, I think the heads you have will "work" but you can do better..Oval port heads are torque friendly....Rectangles are RPM friendly... :thumbup:
Please tell me why my 990 rectangle port heads aren't good on my Arias flat top pistons. Seems to be working for me.
Ok, ok, this was a test, GT and Omar both passed with flying colors.
More to the point, it was a way to get an explanation of why not to do it, rather than just saying it's not good. This is how people learn from us.
Carry on
Hmmm. .... Skip's 7.5 : 1 BBC would make a great generator for my shop compressors . hahaha :D
7.5:1 ? Holy balls! I gots to git me sum rasin gas now, hi compreshun moter an all
Hmmm. .... Skip's 7.5 : 1 BBC would make a great generator for my shop compressors . hahaha :D