jessearias
19th April 2007, 06:18
Ok, here is the scoop on the Evo XR engine parts from Mert Lawwill. I will list the parts and provide notes under each item to explain them as given to me by Mert. This is not new stuff and/or new news as he has been making this stuff for about two years now. But, here is for your enjoyment and/or information.
HEADS: $ 2,500.00 set of two
Note 1: Custom made by STD for Mert Lawwill. They come complete ready to run. The ports are CNC ported and hand finished. They are equipped with HD valve springs and set up for high lift cams.
Note 2: Because the exhaust port exits on the left side, it interferes with the return oil passage that is found on evo heads. The heads are drilled and tapped to use an external return oil line and the case needs to be drilled and tapped for the return line.
Note 3: The heads are made to work with stock flattop 1200 pistons.
Note 4: The heads are designed for 2004 up motors. They use 2004 up rocker boxes, pushrod tubes ect.
Note 5: Need to use adjustable push rods.
INTAKE MANIFOLDS: $ 220.00 set of two
Note 1: They are made to accept 38-40mm spigot mount carbs.
Note 2: Mert uses 40mm CV carbs on his conversions
SUPER TRAPP EXHAUST SYSTEM: $ 950.00 complete
Note 1: System comes complete with mounting kit and disk pack.
CAMS: Zippers $ 435.00 or Andrews 450.00
Note 1: Andrews cam is a N4 grind made to the XR configuration
Note 2: Couldn’t get data on Zippers, but is similar to N4 grind according to Mert.
THROTTLE CABLES (push/pull type): $ 80.00 a set of two (push/pull)
Note 1: Available for Mikuni’s or CV
AIR FILTERS: $ 86.00 set of two
AIR FILTER ADAPTERS: 64.00 set of two
VENT FITTINGS (head to air cleaner) $ 14.00 set of two
EXTERNAL OIL LINES: $ 14.00 set of two
THE BOTTOM LINE: According to Mert, the kit is designed to provide a reliable, pump gas friendly, smooth running street bike. It is designed around a stock compression 1200 motor. Dyno results are 85 RWHP. ( 1200 w/ 9.0 compression, Andrews cams, 40mm CV carbs, 2-1 header) While not earth shattering, it is about ballpark for a low compression, mild cammed motor.
ROOM FOR IMPROVEMENT:
1. The STD heads are perfect candidates for Stage 2/Stage 3 porting and modifications.
2. High compression pistons w/ 15 or 30 degree domes.
3. High performance cams like the SE 575 or the Redshift 585
4. 1250 kit or even better a 88/90 inch kit.
So, there it is my friends. I myself, give the man lots of credit for attempting this. It amazes me that people like him (Stortz ect) (and people on this forum for that matter) can design/develop better looking stuff on a shoestring than the factory with it's big dollar R&D department. Some of you may critique the high prices of his parts. But, then again, here you have a guy buying parts a handful at a time. If he had the vast resources of the factory, the prices could easily be cut in half. We may not all agree with his idea but, it shows initiative and igenuity the factory seems to lack. Hmmmm, maybe the factory should hire these guys to do their design work.... No, that would be to hard, easier to stick chrome and paint jobs on existing bikes.
My opinion.
If you want more information you can contact Mert Lawwill at: mert@mertlawwill.com
HEADS: $ 2,500.00 set of two
Note 1: Custom made by STD for Mert Lawwill. They come complete ready to run. The ports are CNC ported and hand finished. They are equipped with HD valve springs and set up for high lift cams.
Note 2: Because the exhaust port exits on the left side, it interferes with the return oil passage that is found on evo heads. The heads are drilled and tapped to use an external return oil line and the case needs to be drilled and tapped for the return line.
Note 3: The heads are made to work with stock flattop 1200 pistons.
Note 4: The heads are designed for 2004 up motors. They use 2004 up rocker boxes, pushrod tubes ect.
Note 5: Need to use adjustable push rods.
INTAKE MANIFOLDS: $ 220.00 set of two
Note 1: They are made to accept 38-40mm spigot mount carbs.
Note 2: Mert uses 40mm CV carbs on his conversions
SUPER TRAPP EXHAUST SYSTEM: $ 950.00 complete
Note 1: System comes complete with mounting kit and disk pack.
CAMS: Zippers $ 435.00 or Andrews 450.00
Note 1: Andrews cam is a N4 grind made to the XR configuration
Note 2: Couldn’t get data on Zippers, but is similar to N4 grind according to Mert.
THROTTLE CABLES (push/pull type): $ 80.00 a set of two (push/pull)
Note 1: Available for Mikuni’s or CV
AIR FILTERS: $ 86.00 set of two
AIR FILTER ADAPTERS: 64.00 set of two
VENT FITTINGS (head to air cleaner) $ 14.00 set of two
EXTERNAL OIL LINES: $ 14.00 set of two
THE BOTTOM LINE: According to Mert, the kit is designed to provide a reliable, pump gas friendly, smooth running street bike. It is designed around a stock compression 1200 motor. Dyno results are 85 RWHP. ( 1200 w/ 9.0 compression, Andrews cams, 40mm CV carbs, 2-1 header) While not earth shattering, it is about ballpark for a low compression, mild cammed motor.
ROOM FOR IMPROVEMENT:
1. The STD heads are perfect candidates for Stage 2/Stage 3 porting and modifications.
2. High compression pistons w/ 15 or 30 degree domes.
3. High performance cams like the SE 575 or the Redshift 585
4. 1250 kit or even better a 88/90 inch kit.
So, there it is my friends. I myself, give the man lots of credit for attempting this. It amazes me that people like him (Stortz ect) (and people on this forum for that matter) can design/develop better looking stuff on a shoestring than the factory with it's big dollar R&D department. Some of you may critique the high prices of his parts. But, then again, here you have a guy buying parts a handful at a time. If he had the vast resources of the factory, the prices could easily be cut in half. We may not all agree with his idea but, it shows initiative and igenuity the factory seems to lack. Hmmmm, maybe the factory should hire these guys to do their design work.... No, that would be to hard, easier to stick chrome and paint jobs on existing bikes.
My opinion.
If you want more information you can contact Mert Lawwill at: mert@mertlawwill.com