So wats the budget way to 500hp for me?
05-09-2022, 07:31 PM
#61
Platinum Member
Platinum Member
Just for sake of knowing, I later tested them on my dyno that has 10 o2 sensors in back to back, fairly fast pulls, with and without. It did NOT alter 02 data, change it in ;least bit, Smitty
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05-10-2022, 03:40 PM
#62
Registered
I cant praise these 02 extenders enough, short version: had a customer I built two whippled 454s for his Baja 322, he bought new lightning headers, cams shouldnt have reverted. Boat couldnt run 5 minutes on water without killing a o2 sensor tuning. After he paid for 12 02 sensors and we were getting no where, he bought two of those extenders, their directional, we shimmed them to face incoming exhaust flow, shielded o2s from moisture/water. It finally got us thru a on water tuning session.
Just for sake of knowing, I later tested them on my dyno that has 10 o2 sensors in back to back, fairly fast pulls, with and without. It did NOT alter 02 data, change it in ;least bit, Smitty
Just for sake of knowing, I later tested them on my dyno that has 10 o2 sensors in back to back, fairly fast pulls, with and without. It did NOT alter 02 data, change it in ;least bit, Smitty
Thanks Smitty/Diamond Dave
R,
E
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articfriends (05-11-2022)
05-10-2022, 06:28 PM
#63
Registered
Thread Starter
I cant praise these 02 extenders enough, short version: had a customer I built two whippled 454s for his Baja 322, he bought new lightning headers, cams shouldnt have reverted. Boat couldnt run 5 minutes on water without killing a o2 sensor tuning. After he paid for 12 02 sensors and we were getting no where, he bought two of those extenders, their directional, we shimmed them to face incoming exhaust flow, shielded o2s from moisture/water. It finally got us thru a on water tuning session.
Just for sake of knowing, I later tested them on my dyno that has 10 o2 sensors in back to back, fairly fast pulls, with and without. It did NOT alter 02 data, change it in ;least bit, Smitty
Just for sake of knowing, I later tested them on my dyno that has 10 o2 sensors in back to back, fairly fast pulls, with and without. It did NOT alter 02 data, change it in ;least bit, Smitty
I went for a test drive last Saturday, engine ran well, made it to 5k rpm by mistake before hitting full throttle so il be happy to put a bigger prop.
il post full updates soon, im still busy wrenching on the thing. The drive got stuck in forward while docking on a super windy test day, i put the throttle in reverse hit it kinda hard and went foward.... almost went all the way up on the dock. wat a way to crash my maiden voyage party.
long story short,engine runs fine, need a drive and some gelcoat now
Last edited by BlueAndWhite; 05-10-2022 at 06:32 PM.
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articfriends (05-11-2022)
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articfriends (05-11-2022)
08-12-2023, 09:27 PM
#65
Registered
Lots of the parts , including the heads were used on the 509. Edelbrock rec. port marine heads, bowl work, match ported, ex and chambers polished. Comp Cams extreme marine .547"( cant remember the duration) installed straight up. Howards roller lifters, Edelbrock springs, no need to go crazy on the pressure. HP500 single plane intake from CP performance(kind of an off brand name but good quality) matched to heads. MSD marine distributor with DS box. Crane gold rockers. 12qt pan with baffles and tray. CMI headers. Holley 850 dbl pmp with all the marine upgrades. Engine sounds great in the cove. B1 24" tweaked prop. Prop works amazing with the combo, good planing and hooks well at speed Thank you BB blades!
I tuned a procharged 540 in a 272 Baja this summer for a customer he built and installed. Had all stock oil system, wasn't long after we tuned it (weeks) that he hurt bottom end doing sustained wot under boost. Nothing with tune, had low oil pressure and im sure oil was 250 plus, Smitty
...the best WOT throttle protection you can get is a GPH meter on the dash...lol.
