Help please

BloodFX · March 16th, 2020, 05:57 AM

Hi I just bought a 1987 ninja 250 engine on ebay, took the older spark plugs out, then went to put the new iridum plugs in, tightened both by hand then did 1/2 on first 1, on 2nd 1 went to do 1/2 turn and the plug sheared off.

Anyway bought an extractor, removed the broken plug it came out very clean no dmg, went to put yet another new spark plug in and now it refused to go in.

I don't want to force it what do i do now?

memphisninja · March 16th, 2020, 08:00 AM

Get yourself one of these kits and clean the threads up.

https://m.autozone.com/test-scan-and...YaAr9XEALw_wcB

BloodFX · March 16th, 2020, 11:10 AM

Ok thanks.

memphisninja · March 16th, 2020, 01:25 PM

No problem. Let us know how it works out!

BloodFX · March 19th, 2020, 02:24 AM

[IMG]

[/IMG]
I fixed it, after using my mini usb cam on a wire to look at the threads I could see the very top of sparkplug thread was damaged, and I made this diy threadchaser and within 1/4 of a turn it was fixed. Thanks anyway I love this forum.

DannoXYZ · March 19th, 2020, 10:30 AM

That's some resourceful troubleshooting! Awesome work!

BloodFX · March 19th, 2020, 02:45 PM

I have a few more questions, if i put a 1987 gpx 250 in my eliminator 250 will i have to rejet the carbs, i noticed from my manual older engines use different jets and needles?

Secondly i never took a photo of my coils when i stripped bike to the bone to be restored, do green and red coil wires go to left side or the right?

Manual says green and red go to cylinder 1 but with no reference to direction front.

Is cylinder 1 on the left, as if your sat on the bike?

DannoXYZ · March 19th, 2020, 04:25 PM

Yes, direction is of rider on bike facing forward. Left cylinder is #1 from rider's seat.

BloodFX · March 20th, 2020, 01:09 AM

Thanks and any advice on the jetting side please, or is that just related to the gpx airbox maybe?

DannoXYZ · March 20th, 2020, 09:20 AM

Airbox on Ninja and Eliminator should have similar flow-rates, way more than either engine needs; therefore no differences using either.

Jetting change on pre-gen 250s was due to changes in cam-specs.

Go with jetting that matches '87 engine regardless of which bike it's in.

BloodFX · March 20th, 2020, 09:37 AM

what about needle, manual says its different to ?

Oh yea its a gpx not ninja, dunno why i typed ninja at start.

BloodFX · March 20th, 2020, 12:25 PM

1 sec will post hayne manual specs.

BloodFX · March 20th, 2020, 12:27 PM

Fk me just realised 1987 are cvk32, wtf?

BloodFX · March 20th, 2020, 12:28 PM

Just dug myself into a big deep hole.

DannoXYZ · March 20th, 2020, 01:50 PM

Yes, for most part '86-87 are what I consider 1st-gen with CVK32 carbs using metal slides. I think you can use '88-94 pre-gen carbs on those as engines and power-output curves are similar. In some markets, the pre-gen started in '87 as well. Post some photos of your '87 engine, it might be pre-gen rather than 1st-gen depending upon where you got it.

The '95+ bikes has milder cams to give more mid-range along with carb-specs to match.

BloodFX · March 21st, 2020, 05:19 AM

BloodFX · March 21st, 2020, 05:25 AM

only change is el250 gen cover.
will that work?

BloodFX · March 21st, 2020, 05:47 AM

I have about 1 year of restoration photos if ppl are interested?

BloodFX · March 23rd, 2020, 03:52 AM

In a bit of a pickle, I've tried starting the engine off the bike on a bench, it turns over but no spark?

Is this because of the gen cover and eliminator stator I put on the engine or something I missed?

DannoXYZ · March 23rd, 2020, 07:07 AM

It's flywheel & triggers and pickup-coils that needs to match ECU.

The '86-87 uses an analogue-style ignition-system, so you'll need to get harness and ECU from '86-87 EX250 to get that engine to work.

Or more commonly done upgrade '86-87 to digital electronics used in '88+ bikes. You'll need to transfer over from EL250 engine: flywheel & pickup-coils. I'm unsure about positioning of pickup-coils, if they're at same degree-offset between '86-87 vs '88+ bikes.

I've got one of each, so if I have some time, I can crack them open and see... need to re-seal flywheel-cover on my '02 anyway as it's leaking.

BloodFX · March 23rd, 2020, 11:08 AM

So a 1994 eliminator stator and stuff is completely different?

Edit: think i misread your message, I have swapped the flywheel already and stator and cover.

just found my original owners manual for the eliminator 1994 d4.

ignition timing 10 degrees btdc@1300rpm

42 degrees btdc @ 4500 rpm

Reading online it says 1987 model is 5 degress btdc@1300rpm the rest is the same.

DannoXYZ · March 23rd, 2020, 12:05 PM

Specs may look similar, but electronics are completely different between '86-87 and later generations. You'll need to transfer EL250 '94 pickup-coils over to '87 engine as well. That should be all that's left to make it work.

BloodFX · March 23rd, 2020, 12:22 PM

Aren't they already attached to the engine cover?

BloodFX · March 24th, 2020, 02:04 AM

Anyway started it this morning and started first go, turned out my battery was duff, sounds bloody lovely and got a jet kit coming from sigma 6 racing.

DannoXYZ · March 24th, 2020, 11:18 AM

Awesome! Good job!

BloodFX · April 27th, 2020, 03:43 AM

I finally got my jet kit after waiting a month, was wondering as it says to remove the airbox snorkel and make a 2" opening, will this affect low end driveability, or shall i just do it?

March 19th, 2020, 02:24 AM	#5
BloodFX ninjette.org member Name: Dude Location: Earth Join Date: Jul 2018 Motorcycle(s): kawasaki eliminator 250 d4 Posts: 93	[IMG][/IMG] I fixed it, after using my mini usb cam on a wire to look at the threads I could see the very top of sparkplug thread was damaged, and I made this diy threadchaser and within 1/4 of a turn it was fixed. Thanks anyway I love this forum. Last futzed with by BloodFX; March 19th, 2020 at 02:28 AM. Reason: image to big

March 21st, 2020, 05:19 AM	#16
BloodFX ninjette.org member Name: Dude Location: Earth Join Date: Jul 2018 Motorcycle(s): kawasaki eliminator 250 d4 Posts: 93	Last futzed with by BloodFX; March 23rd, 2020 at 03:55 AM.

March 23rd, 2020, 11:08 AM	#21
BloodFX ninjette.org member Name: Dude Location: Earth Join Date: Jul 2018 Motorcycle(s): kawasaki eliminator 250 d4 Posts: 93	So a 1994 eliminator stator and stuff is completely different? Edit: think i misread your message, I have swapped the flywheel already and stator and cover. just found my original owners manual for the eliminator 1994 d4. ignition timing 10 degrees btdc@1300rpm 42 degrees btdc @ 4500 rpm Reading online it says 1987 model is 5 degress btdc@1300rpm the rest is the same. Last futzed with by BloodFX; March 25th, 2020 at 03:08 AM.

March 24th, 2020, 02:04 AM	#24
BloodFX ninjette.org member Name: Dude Location: Earth Join Date: Jul 2018 Motorcycle(s): kawasaki eliminator 250 d4 Posts: 93	Anyway started it this morning and started first go, turned out my battery was duff, sounds bloody lovely and got a jet kit coming from sigma 6 racing.
	1 out of 1 members found this post helpful.

April 27th, 2020, 03:43 AM	#26
BloodFX ninjette.org member Name: Dude Location: Earth Join Date: Jul 2018 Motorcycle(s): kawasaki eliminator 250 d4 Posts: 93	I finally got my jet kit after waiting a month, was wondering as it says to remove the airbox snorkel and make a 2" opening, will this affect low end driveability, or shall i just do it? Last futzed with by BloodFX; May 1st, 2020 at 02:28 AM.

March 16th, 2020, 05:57 AM	#1
BloodFX ninjette.org member Name: Dude Location: Earth Join Date: Jul 2018 Motorcycle(s): kawasaki eliminator 250 d4 Posts: 93	Help please Hi I just bought a 1987 ninja 250 engine on ebay, took the older spark plugs out, then went to put the new iridum plugs in, tightened both by hand then did 1/2 on first 1, on 2nd 1 went to do 1/2 turn and the plug sheared off. Anyway bought an extractor, removed the broken plug it came out very clean no dmg, went to put yet another new spark plug in and now it refused to go in. I don't want to force it what do i do now? Last futzed with by BloodFX; May 1st, 2020 at 02:27 AM.

March 16th, 2020, 08:00 AM	#2
memphisninja ninjette.org member Name: Spencer Location: Memphis,TN Join Date: Sep 2018 Motorcycle(s): 06 Ninja 250 and Suzuki Burgman 400. Previously owned: 78 KZ650, 80 KZ440, 03 ZX6R Posts: 51	Get yourself one of these kits and clean the threads up. https://m.autozone.com/test-scan-and...YaAr9XEALw_wcB

March 16th, 2020, 11:10 AM	#3
BloodFX ninjette.org member Name: Dude Location: Earth Join Date: Jul 2018 Motorcycle(s): kawasaki eliminator 250 d4 Posts: 93	Ok thanks.

March 16th, 2020, 01:25 PM	#4
memphisninja ninjette.org member Name: Spencer Location: Memphis,TN Join Date: Sep 2018 Motorcycle(s): 06 Ninja 250 and Suzuki Burgman 400. Previously owned: 78 KZ650, 80 KZ440, 03 ZX6R Posts: 51	No problem. Let us know how it works out!

March 19th, 2020, 10:30 AM	#6
DannoXYZ ninjette.org certified postwhore Name: AKA JacRyann Location: Mesa, AZ Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot. MOTY - 2018, MOTM - Nov '17	That's some resourceful troubleshooting! Awesome work!

March 19th, 2020, 02:45 PM	#7
BloodFX ninjette.org member Name: Dude Location: Earth Join Date: Jul 2018 Motorcycle(s): kawasaki eliminator 250 d4 Posts: 93	I have a few more questions, if i put a 1987 gpx 250 in my eliminator 250 will i have to rejet the carbs, i noticed from my manual older engines use different jets and needles? Secondly i never took a photo of my coils when i stripped bike to the bone to be restored, do green and red coil wires go to left side or the right? Manual says green and red go to cylinder 1 but with no reference to direction front. Is cylinder 1 on the left, as if your sat on the bike?

March 19th, 2020, 04:25 PM	#8
DannoXYZ ninjette.org certified postwhore Name: AKA JacRyann Location: Mesa, AZ Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot. MOTY - 2018, MOTM - Nov '17	Yes, direction is of rider on bike facing forward. Left cylinder is #1 from rider's seat.

March 20th, 2020, 01:09 AM	#9
BloodFX ninjette.org member Name: Dude Location: Earth Join Date: Jul 2018 Motorcycle(s): kawasaki eliminator 250 d4 Posts: 93	Thanks and any advice on the jetting side please, or is that just related to the gpx airbox maybe?

March 20th, 2020, 09:20 AM	#10
DannoXYZ ninjette.org certified postwhore Name: AKA JacRyann Location: Mesa, AZ Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot. MOTY - 2018, MOTM - Nov '17	Airbox on Ninja and Eliminator should have similar flow-rates, way more than either engine needs; therefore no differences using either. Jetting change on pre-gen 250s was due to changes in cam-specs. Go with jetting that matches '87 engine regardless of which bike it's in.

March 20th, 2020, 09:37 AM	#11
BloodFX ninjette.org member Name: Dude Location: Earth Join Date: Jul 2018 Motorcycle(s): kawasaki eliminator 250 d4 Posts: 93	what about needle, manual says its different to ? Oh yea its a gpx not ninja, dunno why i typed ninja at start.

March 20th, 2020, 12:25 PM	#12
BloodFX ninjette.org member Name: Dude Location: Earth Join Date: Jul 2018 Motorcycle(s): kawasaki eliminator 250 d4 Posts: 93	1 sec will post hayne manual specs.

March 20th, 2020, 12:27 PM	#13
BloodFX ninjette.org member Name: Dude Location: Earth Join Date: Jul 2018 Motorcycle(s): kawasaki eliminator 250 d4 Posts: 93	Fk me just realised 1987 are cvk32, wtf?

March 20th, 2020, 12:28 PM	#14
BloodFX ninjette.org member Name: Dude Location: Earth Join Date: Jul 2018 Motorcycle(s): kawasaki eliminator 250 d4 Posts: 93	Just dug myself into a big deep hole.

March 20th, 2020, 01:50 PM	#15
DannoXYZ ninjette.org certified postwhore Name: AKA JacRyann Location: Mesa, AZ Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot. MOTY - 2018, MOTM - Nov '17	Yes, for most part '86-87 are what I consider 1st-gen with CVK32 carbs using metal slides. I think you can use '88-94 pre-gen carbs on those as engines and power-output curves are similar. In some markets, the pre-gen started in '87 as well. Post some photos of your '87 engine, it might be pre-gen rather than 1st-gen depending upon where you got it. The '95+ bikes has milder cams to give more mid-range along with carb-specs to match.

March 21st, 2020, 05:25 AM	#17
BloodFX ninjette.org member Name: Dude Location: Earth Join Date: Jul 2018 Motorcycle(s): kawasaki eliminator 250 d4 Posts: 93	only change is el250 gen cover. will that work?

March 21st, 2020, 05:47 AM	#18
BloodFX ninjette.org member Name: Dude Location: Earth Join Date: Jul 2018 Motorcycle(s): kawasaki eliminator 250 d4 Posts: 93	I have about 1 year of restoration photos if ppl are interested?

March 23rd, 2020, 03:52 AM	#19
BloodFX ninjette.org member Name: Dude Location: Earth Join Date: Jul 2018 Motorcycle(s): kawasaki eliminator 250 d4 Posts: 93	In a bit of a pickle, I've tried starting the engine off the bike on a bench, it turns over but no spark? Is this because of the gen cover and eliminator stator I put on the engine or something I missed?

March 23rd, 2020, 07:07 AM	#20
DannoXYZ ninjette.org certified postwhore Name: AKA JacRyann Location: Mesa, AZ Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot. MOTY - 2018, MOTM - Nov '17	It's flywheel & triggers and pickup-coils that needs to match ECU. The '86-87 uses an analogue-style ignition-system, so you'll need to get harness and ECU from '86-87 EX250 to get that engine to work. Or more commonly done upgrade '86-87 to digital electronics used in '88+ bikes. You'll need to transfer over from EL250 engine: flywheel & pickup-coils. I'm unsure about positioning of pickup-coils, if they're at same degree-offset between '86-87 vs '88+ bikes. I've got one of each, so if I have some time, I can crack them open and see... need to re-seal flywheel-cover on my '02 anyway as it's leaking.

March 23rd, 2020, 12:05 PM	#22
DannoXYZ ninjette.org certified postwhore Name: AKA JacRyann Location: Mesa, AZ Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot. MOTY - 2018, MOTM - Nov '17	Specs may look similar, but electronics are completely different between '86-87 and later generations. You'll need to transfer EL250 '94 pickup-coils over to '87 engine as well. That should be all that's left to make it work.

March 23rd, 2020, 12:22 PM	#23
BloodFX ninjette.org member Name: Dude Location: Earth Join Date: Jul 2018 Motorcycle(s): kawasaki eliminator 250 d4 Posts: 93	Aren't they already attached to the engine cover?

March 24th, 2020, 11:18 AM	#25
DannoXYZ ninjette.org certified postwhore Name: AKA JacRyann Location: Mesa, AZ Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot. MOTY - 2018, MOTM - Nov '17	Awesome! Good job!