Hawk ported and decked head - Page 2

**JerryHawk250** · 12-11-2017, 06:32 AM

Quote:

Originally Posted by silva

Yes it went from 63 mph to 68 mph gps, with my 16/40 sprocket combo. Now i need to do a run with my 17/40 sprocket combo.

Awesome!

can't wait to do mine. I have everything I need except for the time to do it .

BlackBike · 12-11-2017, 09:47 PM

Quote:

Originally Posted by JerryHawk250

Awesome!

can't wait to do mine. I have everything I need except for the time to do it .

Take those coincidental sick days on Friday and Monday

your public demands it

**JerryHawk250** · 12-12-2017, 08:52 AM

Quote:

Originally Posted by BlackBike

Take those coincidental sick days on Friday and Monday

your public demands it

I wish. Every project in our office goes through me. Even when I'm home sick in bed I'm still working. If I take one day off it take 3 days to catch back up. lol Nobody here wants my job.

**JerryHawk250** · 12-18-2017, 11:00 AM

Silva, Did you have to pull the engine or was there enough clearance to remove the head while engine was still mounted on the frame?

silva · 12-18-2017, 12:30 PM

There is plenty of clearance once you remove the fuel tank.

**JerryHawk250** · 12-18-2017, 02:17 PM

Quote:

Originally Posted by silva

There is plenty of clearance once you remove the fuel tank.

Thanks, It look like it would be tight. That's one less step to have to worry about. Any new land speed records? lol

Megadan · 12-18-2017, 02:32 PM

Once you have the head pulled it should only take 1 solid day to get the port work done. Even my more aggressive work could easily be done in a day.

The hard part is getting that 1 day to do it for sure. I know that struggle!

**JerryHawk250** · 12-18-2017, 02:37 PM

Quote:

Originally Posted by Megadan

Once you have the head pulled it should only take 1 solid day to get the port work done. Even my more aggressive work could easily be done in a day.

The hard part is getting that 1 day to do it for sure. I know that struggle!

I have some vacation time I have to use up before February. So hopefully soon.

kirbo7106 · 01-03-2018, 10:57 PM

I have sent several seats to Sargent Cycle out of Jacksonville, Florida. Their website is: www.sargentcycle.com. They do great work, but it doesn’t come cheap. They have Super Cell foam that they replace the factory foam with and you can order different materials and trim. It’s going to run me between $200-250 plus shipping. I ordered a spare seat to send off to Sargent Cycle, so I don’t have to be seat-less while they do their magic. When I get the seat back, I’ll post pictures. Here’s some pictures of their work:
Name: 109976CC-E90D-4517-9621-6B6F549272F2.jpg
Views: 919
Size: 20.0 KB

Name: 109976CC-E90D-4517-9621-6B6F549272F2.jpg
Views: 919
Size: 20.0 KB

Name: 7449B4C4-A0F5-4C1D-A665-1105CB6DE109.jpg
Views: 925
Size: 18.8 KB

Have a great day!

ben2go · 01-04-2018, 01:15 PM

Quote:

Originally Posted by kirbo7106

I have sent several seats to Sargent Cycle out of Jacksonville, Florida. Their website is: www.sargentcycle.com. They do great work, but it doesn’t come cheap. They have Super Cell foam that they replace the factory foam with and you can order different materials and trim. It’s going to run me between $200-250 plus shipping. I ordered a spare seat to send off to Sargent Cycle, so I don’t have to be seat-less while they do their magic. When I get the seat back, I’ll post pictures. Here’s some pictures of their work:
Attachment 11669

Attachment 11670

Have a great day!

That's about what I charged for a nice upholstered seat with new foam and moisture barrier. It's not dirt cheap but not high either. Corbin wants $400-$500 to reshape the foam and sew a cheap imitation leather seat cover for it and install everything.

Thumper · 02-02-2022, 06:09 AM

There are lots of Zhongshen CG250 heads available on ebay for about $75. I have the dremel and all the bits and sanding wheels, but I don't want to have the bike down for an extended period while I work through this, and also a little worried that I could screw it up

So getting anew head seems to be a reasonable approach, and they are not too expensive. But which one!!?? They all seem to have the exhaust gas recirc port blocked off. It would be nice to have the holes drilled there to reinstall it as if it were a working port (!) for inspection.

Does anyone have a preference or knowledge about which vendor is more reliable, which head is likely to be better? I also want to shave it for a little more compression, so the casting needs to be good enough to take all of this abuse!

**JerryHawk250** · 02-02-2022, 07:42 AM

The last few heads I've done took me about an hour and half. Even if you took your good old time you can still do it in a half a day.

Bruces · 02-02-2022, 09:03 AM

Finding the time is very easy ,you “ think” you have covid ,tell your boss ,and get the bike fixed .

franque · 02-02-2022, 01:41 PM

You could always drill and tap the casting and put the pipe back on, it wouldn't be too hard.

Thumper · 02-02-2022, 03:38 PM

Quote:

Originally Posted by franque

You could always drill and tap the casting and put the pipe back on, it wouldn't be too hard.

It is a good idea. But getting the holes straight would be the challenge. I could use a punch to make a divot to guide the drill, and eyeball the perpendicular angle while drilling...while stepping up in bit sizes I could straighten the holes if needed until at the tap size

*One of the reasons for doing this on a new head is that I don't have blocks of time really. Full time job, family, and a house that periodically needs my attention! Having a spare head to tinker with for an hour or two while the motorcycle is intact and ridable is preferable

Also, I can add the 4degree advance key at the same time when I swap out.

If it works and I end up with a good head, I could port and polish the OEM and sell it to offset the cost of the new head.

12-18-2017, 11:00 AM	#19
JerryHawk250 Moderator Join Date: Oct 2016 Location: Houma, La. Posts: 11,574	Silva, Did you have to pull the engine or was there enough clearance to remove the head while engine was still mounted on the frame? __________________ 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel
	0

12-18-2017, 02:32 PM	#22
Megadan Join Date: Apr 2017 Location: Omaha, NE Posts: 8,032	Once you have the head pulled it should only take 1 solid day to get the port work done. Even my more aggressive work could easily be done in a day. The hard part is getting that 1 day to do it for sure. I know that struggle! __________________ Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124
	0

01-03-2018, 10:57 PM	#24
kirbo7106 Join Date: Feb 2017 Location: Holiday, Florida Posts: 672	Seat Options I have sent several seats to Sargent Cycle out of Jacksonville, Florida. Their website is: www.sargentcycle.com. They do great work, but it doesn’t come cheap. They have Super Cell foam that they replace the factory foam with and you can order different materials and trim. It’s going to run me between $200-250 plus shipping. I ordered a spare seat to send off to Sargent Cycle, so I don’t have to be seat-less while they do their magic. When I get the seat back, I’ll post pictures. Here’s some pictures of their work: Have a great day! __________________ Dan-O -2018 Tao Tao HellCat - DOA -2016 Hawk 250 - Kitty Hawk - eBay exhaust, Mikuni carb(120 main/30 Pilot), airbox mod with K&N filter, digital cluster, total LEDs, 17/45 sprockets, RK chain, Shinko 244 tires, trunk, aftermarket levers, burrito tube, skid plate, Sargent Cycle Seat... -2003 HD Sportster 100th Anniversary -1999 Buell X-1 Lightning - Race kit, Buell Seat
	1

02-02-2022, 06:09 AM	#26
Thumper Join Date: Feb 2021 Location: Kansas City Posts: 2,346	aftermarket CG250 head? There are lots of Zhongshen CG250 heads available on ebay for about $75. I have the dremel and all the bits and sanding wheels, but I don't want to have the bike down for an extended period while I work through this, and also a little worried that I could screw it up So getting anew head seems to be a reasonable approach, and they are not too expensive. But which one!!?? They all seem to have the exhaust gas recirc port blocked off. It would be nice to have the holes drilled there to reinstall it as if it were a working port (!) for inspection. Does anyone have a preference or knowledge about which vendor is more reliable, which head is likely to be better? I also want to shave it for a little more compression, so the casting needs to be good enough to take all of this abuse!
	0

02-02-2022, 07:42 AM	#27
JerryHawk250 Moderator Join Date: Oct 2016 Location: Houma, La. Posts: 11,574	The last few heads I've done took me about an hour and half. Even if you took your good old time you can still do it in a half a day. __________________ 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel
	0

12-18-2017, 12:30 PM	#20
silva Join Date: Jan 2017 Posts: 37	There is plenty of clearance once you remove the fuel tank.
	1

02-02-2022, 09:03 AM	#28
Bruces Join Date: May 2018 Posts: 1,585	Finding the time is very easy ,you “ think” you have covid ,tell your boss ,and get the bike fixed .
	1

02-02-2022, 01:41 PM	#29
franque Join Date: Nov 2017 Location: Marseille, France -> Conakry, Guinea Posts: 1,481	You could always drill and tap the casting and put the pipe back on, it wouldn't be too hard.
	2