ok heres my problem 454 10.1 comp tunnel ram dual 650 dubble pumps.wet stacks berk pump ab stanless impeller 19ft tahiti low profile hull semi pro grate,can not get over 4200 rpm 50 mph.ready to shoot this piece of wonderful crap.need input trying to get back to or close to 6000 rpm .this thing is giving me a headaceWhats your timing at ?
Your timing is set at 20 base? Isn't a BBC's timing supposed to be around 10 deg. before tdc? Giving it about 32 deg. total.
new chain installed it my self.engine bounces off rev limiter out of water.base is at 20 due to the crane fireball ignition
First, and Tom will chime in here eventually I'm sure since he built and installed the jet, Sounds to me like you have way too much impeller for the HP you have.IN addition to other issues, ie cam timing. ??? Dunno where your HP curve is at, but if you plan to run the boat at 6000 RPM , and that's where it's max HP is at, and you have, say 500HP, you should be running a C impleller.
This is info I gathered from Tom, correct me if I'm wrong guys.
IMHO You have bigger issues in that timing set change tho.
Ray
Lol Captain and coke here GT, Maybe they coincide in empathizing bad intentions!
Ray
rember it was a panther i spun it over 7000 with no prob.could not get rpms down now i cant get them back up rpms that is. might have to have tom cut it down or go real crazy with this dang bbc.any one have any steroids for my bbc
rember it was a panther i spun it over 7000 with no prob.could not get rpms down now i cant get them back up rpms that is. might have to have tom cut it down or go real crazy with this dang bbc.any one have any steroids for my bbc7000's RPM"S :o your tach setting is set wrong.LOL Check the clean out in the pump
before pump change 6000 63 mph 7000,70ish stayed around 6 on the rev at a solid 63 mph on the gps.only difference from last year is ballanced .100 popup studed top and bottom and oringed block cooper head gaskets engine has 10 hours since put in
before pump change 6000 63 mph 7000,70ish stayed around 6 on the rev at a solid 63 mph on the gps.only difference from last year is ballanced .100 popup studed top and bottom and oringed block cooper head gaskets engine has 10 hours since put inBro somethings wrong I'm turning 70@4500 rpm's check behind the tach for setting's
its set at 8 cylMe and POPs had the same problem people looked at us like your crazy 7000's rpm's it was the tach it was a bad one.
Bro somethings wrong I'm turning 70@4500 rpm's check behind the tach for setting's
7000 rpm's on a BBC in my opinion would sound like the second sign when the locusts are coming. Or, more like F1 racing, lol
Ray
Could very well be, or not.
Just the basics guy, we're trying to help, not make fun. 1 step at a time and you should have what seems to be to be a 70 mph or better boat. We're just challenging each other right now with the best quips.
Check the cam timing, IMHO, THAT is going to be you culprit. No finger pointing, but I once timed a 340 Chrysler damn near 180 degrees out of phase and couldn't figure out why it wouldn't start. Well 7 bent valves and a thousand bucks later, learned my lesson.
Just saying, we all do it.
Ray
where is tom
Like my newest boat??? you mean? lol I'm damn PROUD of that boat, Udder Nonsense, lol
Ray
have to admit tom and josh did a purdy job installing the pumpWhere's the pics
Where's the pics
dont know how to get them here there are in projects under tahitimike pump swapPASTE AND COPY :screwy:
OK, Here's the Udder nonsense
(Attachment Link)
so what did we come up with that i need to go back and take timein chain 101
LMFDAO still didn't work