Optimizing Merc 2.0 150

[Sidewinder]

The Season will be over soon, time to spend some attention to the engine...

I've bought it last year as a Merc 2.0 135.

It's mounted on a Ring 16 (pics attached).

What i've done until now:

- Carbs out of a 200??? (WH 31, 0.66 Jets) Are these 200hp Carbs???
- Bobs Machine Tuner
- Bobs Exhaust Housing
- Removed Can

WOT rpm's changed from 5300 to 6200 with this mods (Laser 2 23p, 2:1 Box).

What are the next steps to get more power from it?

Do XR2 Heads fit on this engine?
Changing the reeds?

Would this result in a remarkable performace gain?

Thanks

[lloyde]

what speed - revs are you seeing at the moment ,i had 58 mph on the gps with the same set up we could have got low 60 with the right prop.
http://www.boatmad.com/forum/showthread.php?t=15319 photos of it

[Sidewinder]

We had 65 mph on the gps. Revs are 6200 - 6300rpm.

Maybe i could turn a 25p at the same revs with the XR2 Heads?

XR2 reeds don't fit in the 135/150 front half!?

[gonein60seconds]

i take it, it has vertical reeds?

[gonein60seconds]

if it has horizontal reeds, changing the reeds, along with other mods you have done will all add together and help.

[Sidewinder]

Somebody told me it has vertical reeds, so XR2 reeds won't fit then?

What's up with the Xr2 Heads? This helps on overall performance?

[Germansaleen]

Hello Sidewinder (neighbour)

i am in the same progress with my engine like you and
i am thought about to send next spring some parts over to http://www.jaysmithracing.com/

Cut and CC Heads + Radial Cut Pair ........$150.00
Reeds Cut Both Plenum and Plates........$150.00
Lap Reed Cages (set of 6)...........$60.00
new reeds Tony Ducas ? price ?
Cut and Modify Tuner $100.00
2 x T-Shirt with Logo on Front and Back $15.00 :-)

we can ship together and share the costs ?
if you are interested let me know

michael

[Jay Smith]

Increased compression is the biggest bang for money spent normally picks up dramatic bottom end, mid range and 2 -3 MPH on the big end......

I charge $175.00 USD to CC a pair of heads to a target compression number of 145 PSI cranking at sea level.

I'd find a horizontal front half and install TDR reeds at $175.00 USD a set.

If you have the "hour glass shaped" 5 petal reed cages I machine them like the high performance square openings for $60.00 USD for a set of 6

Any shorter bell style tuner is a nice addition either it be a 200 HP Merc or a Bob's both work fine.

Freight cost used to be an issue but since the USPS has came up with the flat rate box shipping methods freight to Europe is now VERY reasonable and has a very fast delivery times ( 6-7 days ) ..

Jay @ JSRE 1 281 576 5088 cst or hitman6563@yahoo.com

[Germansaleen]

Hi Jay
sounds good to me , i have horizontal reeds on mine .
have to look , is it 5 petal or 6 .

i let you know when the time is rite ($$$)

like the way you talk and take care of your customers here and at s&f
you will have a new customer

michael

[Jay Smith]

Cathy and I try to treat each customer as we would like to be treated.. That method has worked out GREAT for the 14 years JSRE has been in business..And we see no reason for change..

Cheers,
Jay