Planet Minis

mart35 · 03-23-2008, 01:08 PM

Hi all, i've seen the 146cc bore kits for the jailing 124cc engines but i'd be interested if anyone also sells a stroker crank as well????, be good to use the bore kit and stroker crank together.

firepower354 · 03-23-2008, 02:11 PM

Akunar has offset pins and parts, and I know a guy who can press it up and true it. Got a 68mm GPX swinger on the bench right now.

mart35 · 03-23-2008, 02:15 PM

Is Akunar a member on this forum?, just searched and he does'nt seem to be listed!..
What the biggest you can go with a combination of bore kit and stroker crank without having to bore the cases?.

firepower354 · 03-23-2008, 02:23 PM

A drop-on 57mm 146 jug is the biggest bore without opening the cases. I have seen them be tight in spots and hurt the piston though, so it still needs a little cleanup or at least a careful check. A 68mm stroke has to have the rod ground to clear the trans, a spacer under the jug, and possible camchain issues (we added a 3mm spacer and converted to 14/28 sprockets-it maths out

). A 63mm stroke can use a 97mm rod and stay with the stock jug height, for a no fuss 161cc.

firepower354 · 03-23-2008, 02:24 PM

Akunar is a supplier, but not a vendor here.

mart35 · 03-23-2008, 02:51 PM

Yeah thanks! I've just googled them & asked for some prices.

Regards the 6mm stroker crank & 146cc bore kit what size head valves would work best do you think, i've standard jailing 124cc 27/23 valves & the ports have been fully gas flowed, do you know which if any 28/24 valve head & would that be a better idea to let the motor breath better?.

firepower354 · 03-23-2008, 03:04 PM

I'm ordering from them late next week, if you want to save on shipping. I haven't seen a Jailing with bigger than 24/21 valves, but done a few Lifan swaps. I'm ordering some 30/26 pairs to turn to 30/24, but 28/24 with good porting will feed it. It's not gonna be a revver, but will have a monster midrange hit.

mart35 · 03-23-2008, 03:12 PM

I'd gladly split the shipping on an order but unfortunatly i'm in the UK mate.

firepower354 · 03-23-2008, 06:02 PM

Crappers, on your own

mart35 · 03-24-2008, 03:34 PM

Can I run this by you, if I use a 55.50 Honda crankshaft with a 2.25mm pin that take's the crank to 60mm, so if I use a 3mm spacer that'll be the equivalent of a 63mm stroker crank? then just change the cam sprockets to 14/28 will this work or have I confused myself again lol. Do you use a stock base gasket either side of the 3mm spacer or just gasket sealant?.

hpiguy · 03-24-2008, 05:20 PM

Quote:

Originally Posted by mart35

Can I run this by you, if I use a 55.50 Honda crankshaft with a 2.25mm pin that take's the crank to 60mm, so if I use a 3mm spacer that'll be the equivalent of a 63mm stroker crank? then just change the cam sprockets to 14/28 will this work or have I confused myself again lol. Do you use a stock base gasket either side of the 3mm spacer or just gasket sealant?.

I'm running the 2mm spacer on my 146 and used a thin bead of permatex.

Kurlon · 03-24-2008, 06:22 PM

The stroker plate doesn't increase the stroke, it just raises the jug. If you put a 2.25mm pin in your crank, at TDC your piston will be 2.25mm higher than before. The spacer plate makes up for that difference.

firepower354 · 03-24-2008, 07:25 PM

2.25 offset pin? Not at Akunar, for a 55.5 crank. Either Click or Wave pin depending on 25 or 26mm pin.

Staggs Racing · 03-25-2008, 05:23 PM

mart35 I have the 6mm stroker cranks 80.00 plus 24.00 shipping to the UK

FASTFREAK693 · 03-26-2008, 08:45 AM

Quote:

Originally Posted by Staggs Racing

mart35 I have the 6mm stroker cranks 80.00 plus 24.00 shipping to the UK

Is that a whole crank or just the pin and rod kit?

03-23-2008, 01:08 PM	#1 (permalink)
mart35 PM Newbie Join Date: Feb 2008 Location: Worcestershire UK Posts: 16	stroker crank for 124cc jailing Hi all, i've seen the 146cc bore kits for the jailing 124cc engines but i'd be interested if anyone also sells a stroker crank as well????, be good to use the bore kit and stroker crank together.

03-23-2008, 02:11 PM	#2 (permalink)
firepower354 3rd Gear Member Join Date: Oct 2006 Location: Flint MI Posts: 6,092	Re: stroker crank for 124cc jailing Akunar has offset pins and parts, and I know a guy who can press it up and true it. Got a 68mm GPX swinger on the bench right now.

03-23-2008, 02:15 PM	#3 (permalink)
mart35 PM Newbie Join Date: Feb 2008 Location: Worcestershire UK Posts: 16	Re: stroker crank for 124cc jailing Is Akunar a member on this forum?, just searched and he does'nt seem to be listed!.. What the biggest you can go with a combination of bore kit and stroker crank without having to bore the cases?. Last edited by mart35; 03-23-2008 at 02:19 PM.

03-23-2008, 02:23 PM	#4 (permalink)
firepower354 3rd Gear Member Join Date: Oct 2006 Location: Flint MI Posts: 6,092	Re: stroker crank for 124cc jailing A drop-on 57mm 146 jug is the biggest bore without opening the cases. I have seen them be tight in spots and hurt the piston though, so it still needs a little cleanup or at least a careful check. A 68mm stroke has to have the rod ground to clear the trans, a spacer under the jug, and possible camchain issues (we added a 3mm spacer and converted to 14/28 sprockets-it maths out). A 63mm stroke can use a 97mm rod and stay with the stock jug height, for a no fuss 161cc.

03-23-2008, 02:24 PM	#5 (permalink)
firepower354 3rd Gear Member Join Date: Oct 2006 Location: Flint MI Posts: 6,092	Re: stroker crank for 124cc jailing Akunar is a supplier, but not a vendor here.

03-23-2008, 02:51 PM	#6 (permalink)
mart35 PM Newbie Join Date: Feb 2008 Location: Worcestershire UK Posts: 16	Re: stroker crank for 124cc jailing Yeah thanks! I've just googled them & asked for some prices. Regards the 6mm stroker crank & 146cc bore kit what size head valves would work best do you think, i've standard jailing 124cc 27/23 valves & the ports have been fully gas flowed, do you know which if any 28/24 valve head & would that be a better idea to let the motor breath better?.

03-23-2008, 03:04 PM	#7 (permalink)
firepower354 3rd Gear Member Join Date: Oct 2006 Location: Flint MI Posts: 6,092	Re: stroker crank for 124cc jailing I'm ordering from them late next week, if you want to save on shipping. I haven't seen a Jailing with bigger than 24/21 valves, but done a few Lifan swaps. I'm ordering some 30/26 pairs to turn to 30/24, but 28/24 with good porting will feed it. It's not gonna be a revver, but will have a monster midrange hit.

03-23-2008, 03:12 PM	#8 (permalink)
mart35 PM Newbie Join Date: Feb 2008 Location: Worcestershire UK Posts: 16	Re: stroker crank for 124cc jailing I'd gladly split the shipping on an order but unfortunatly i'm in the UK mate.

03-23-2008, 06:02 PM	#9 (permalink)
firepower354 3rd Gear Member Join Date: Oct 2006 Location: Flint MI Posts: 6,092	Re: stroker crank for 124cc jailing Crappers, on your own

03-24-2008, 03:34 PM	#10 (permalink)
mart35 PM Newbie Join Date: Feb 2008 Location: Worcestershire UK Posts: 16	Re: stroker crank for 124cc jailing Can I run this by you, if I use a 55.50 Honda crankshaft with a 2.25mm pin that take's the crank to 60mm, so if I use a 3mm spacer that'll be the equivalent of a 63mm stroker crank? then just change the cam sprockets to 14/28 will this work or have I confused myself again lol. Do you use a stock base gasket either side of the 3mm spacer or just gasket sealant?. Last edited by mart35; 03-24-2008 at 03:38 PM.

03-24-2008, 06:22 PM	#12 (permalink)
Kurlon Super Moderator Join Date: Feb 2005 Location: Windham, ME Posts: 7,798	Re: stroker crank for 124cc jailing The stroker plate doesn't increase the stroke, it just raises the jug. If you put a 2.25mm pin in your crank, at TDC your piston will be 2.25mm higher than before. The spacer plate makes up for that difference. __________________ http://www.x386.net/TTR 2004 ST3 - 'Duckie'?!?! 2005 CRF70RR - MiniGP Weapon 2005 CRF70 - Dirt Donk 2008 Pitster Pro X4 Motard 1991 GS500E - LRRS/CCS #771

03-24-2008, 07:25 PM	#13 (permalink)
firepower354 3rd Gear Member Join Date: Oct 2006 Location: Flint MI Posts: 6,092	Re: stroker crank for 124cc jailing 2.25 offset pin? Not at Akunar, for a 55.5 crank. Either Click or Wave pin depending on 25 or 26mm pin.

03-25-2008, 05:23 PM	#14 (permalink)
Staggs Racing 3rd Gear Member Join Date: Jul 2005 Location: victorville,ca Posts: 5,945	Re: stroker crank for 124cc jailing mart35 I have the 6mm stroker cranks 80.00 plus 24.00 shipping to the UK

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