Mercury engine - Page 4

roofer · 21-01-2005, 07:43 PM

taz i think hutchy said it makes about 300hp, i also think you'll be reving over 7k because of the porting and the sound of engine flat out

Taz · 21-01-2005, 07:45 PM

Yeah but roofer im not a maniac like you! Dont wanna kill meself.

What boat are you putting yours on?

roofer · 21-01-2005, 07:48 PM

mine is being fitted at this moment to a lightweight p 18 , im having it rigged in tandem with infills down sides to stop you falling out.

Burty · 21-01-2005, 07:49 PM

Quote:

Originally posted by Taz

How much is a regulator? Cant i just bosh a cossie one on there they are adjustable its only a regulator isnt it.:frown:

I think 280hp will be well enougth for my p20 all i wanna do is mess about not race and i do like a ski

What prop would i need to run on there 25 pitch?

Yeah i dont like reving engines to much cos they norm blow up on me 7k will be my limit dont wanna destroy it

Dude you cant just plonk a reg on you would also need to change your ecu. if you not revin past 8k it will be fine. i run a 22.5" ET on my P20 and on flat water with the engine high it will just pull 8K.
you need to rev it or it will be like only having a 200hp motor

JamesM · 21-01-2005, 07:50 PM

You cant just put a reg on and up the pressure cause the ECU map is set up with a specific fuel pressure in mind. The gold reg 39 psi setup on that motor is good for about 8500rpm. Any more and really you will want the black 56psi reg and a drag ECU. The drags run the 56psi set up from the factory.

Taz · 21-01-2005, 07:57 PM

How fast does your boat go then burty?

Ah man cant you just bosh a chip in there I dont think a drag ecu is the sort of thing i will beable to find on ebay

BREN · 21-01-2005, 07:58 PM

Quote:

Originally posted by Taz
Yeah but roofer im not a maniac like you! Dont wanna kill meself.

What boat are you putting yours on?

so why bother with such a large hp motor

Taz · 21-01-2005, 08:00 PM

Quote:

Originally posted by BREN
so why bother with such a large hp motor

Cos its gotta keep up with Silversurfers XR2

roofer · 21-01-2005, 08:05 PM

taz i think you will find an xr2 is about 10 mph slower, and probably a lot slower than that.

JamesM · 21-01-2005, 08:07 PM

You maybe able to change the chip depending on which box it is at present.

roofer · 21-01-2005, 08:10 PM

i think you can change the chip cos its fitted with later digital box

BREN · 21-01-2005, 09:11 PM

Quote:

Originally posted by roofer
taz i think you will find an xr2 is about 10 mph slower, and probably a lot slower than that.

i thought that aswell.surely a xr2 can't keep up with a 260/280hp?

JamesM · 21-01-2005, 10:47 PM

If its an A48 yes you can change the chip, you would need an A63 chip from the states.

However if you dont want to rev it past 8500 then why go to all the bother. It will be plenty mental enough as it is.

Taz · 21-01-2005, 11:03 PM

Quote:

Originally posted by Johnny Boat Dude
If its an A48 yes you can change the chip, you would need an A63 chip from the states.

However if you dont want to rev it past 8500 then why go to all the bother. It will be plenty mental enough as it is.

GOOD ENOUGTH FOR ME!

JamesM · 21-01-2005, 11:11 PM

Cool

Burty · 22-01-2005, 01:24 AM

Quote:

Originally posted by Taz
How fast does your boat go then burty?

Ah man cant you just bosh a chip in there I dont think a drag ecu is the sort of thing i will beable to find on ebay

Dunno mate cus i lent my gps to a mate but i went up the river last week and pulled 8K which people tell me is nearly 90MPH, believe me that is fast enough for anyone cus i couldn't turn the steering

hutchy · 22-01-2005, 09:16 AM

CHIPS CUSTOM MADE AT TVR.

hutchy · 22-01-2005, 09:18 AM

ANOTHER

roofer · 25-01-2005, 04:56 PM

i thought somebody would have noticed that the pics of my block are actually of a drag motor, tut tut

Cyco · 25-01-2005, 05:01 PM

I thought it was a 280 or a drag as there were no grinding marks in the exhaust chest.
Even the best engine tuners can't do it that tidy.