Methanol - C-12 & Nitrous injected CR500

100hp honda · Post by **100hp honda** » July 20th, 2008, 7:10 pm

lewisclan wrote:well I have a vacumme leak some where and I have way to much fuel runing through the carb.
I am not sure it I will be bringing it to pismo

how do you figure theres vacuum leak ? did you check float hieght ? when you fire it up it may sound rich compared to a gas motor and it will smoke alot but you have to rev it and clean it out. if you told packard your location he should of sent it fairly close with the needle. most guys ive seen run #9 plug for alky, not sure if that may be causing issues. probly have to advance the timing also. call dennis in the morning he could give you some pointers with that carb

lewisclan · Post by **lewisclan** » July 20th, 2008, 7:52 pm

I took it all apart and replaced the base gasket I used a little 1211 and another oem gasket. Its all back together and ready for pismo .
the 1st time I run it I had a leak at the base gasket so I unbolted it and ran a little 1211 in that area with a Q-tip and bolted it back up. I fired it the next morning & to go through a few heat cycles I ran it for about 7-8 min. it was running so coild that you can put your tongue on the cyl & head. but the motor ran away a few itmes .

So the injected fule will be race gas and there are a 20-24 jet in the selnoids.
there is so much alky running through the bike its blowing through the stinger .

M.F.D.B. · Post by **M.F.D.B.** » July 20th, 2008, 9:12 pm

Dude I cant wait!! What did you do about main seals?? Are they alky seals or do you plan to replace them often??

lewisclan · Post by **lewisclan** » July 21st, 2008, 7:06 am

M.F.D.B. wrote:Dude I cant wait!! What did you do about main seals?? Are they alky seals or do you plan to replace them often??

I dont know how often they would need changing but they are oem

100hp honda · Post by **100hp honda** » July 21st, 2008, 7:26 am

M.F.D.B. wrote:Dude I cant wait!! What did you do about main seals?? Are they alky seals or do you plan to replace them often??

dont banshees use similiar rubber seals ? i havent heard the banshees guys say 1 thing about it ruining thier seals in an untimely manner (except the dumb fukks that let it sit in the motor). jay, keep the motor AND fuel pump purged good and youll be just fine

. 20:1 benol mixture will keep it lubed good

britincali · Post by **britincali** » July 21st, 2008, 7:55 am

I was pondering this last night.......

If you have roughly twice the fuel going through the motor would it not make sense to mix at say 80:1 ?

Post by **AlisoBob** » July 21st, 2008, 9:00 am

I always thought so too.....

britincali · Post by **britincali** » July 21st, 2008, 9:01 am

Edit :- where did danny's post go?

Dont forget the size of the jets and amount of fuel running though an alky motor.

You in effect have twice the oil coming out of suspension and entering the bottom end, thus 40:1 on a alky motor is the same as 20:1 in an gas motor. If the motor was revving twice as fast it wouldnt be an issue but it aint.

I could be completly off base here

lewisclan · Post by **lewisclan** » July 21st, 2008, 9:05 am

100hp honda wrote:
M.F.D.B. wrote:Dude I cant wait!! What did you do about main seals?? Are they alky seals or do you plan to replace them often??
dont banshees use similiar rubber seals ? i havent heard the banshees guys say 1 thing about it ruining thier seals in an untimely manner (except the dumb fukks that let it sit in the motor). jay, keep the motor AND fuel pump purged good and youll be just fine . 20:1 benol mixture will keep it lubed good

20:1 are you sure

lewisclan · Post by **lewisclan** » July 21st, 2008, 9:06 am

I just called Dennis he mixes 26:1 927

britincali · Post by **britincali** » July 21st, 2008, 9:08 am

lewisclan wrote: 20:1 are you sure

If im right that would be a 10:1 end ratio...

It aint one of these

britincali · Post by **britincali** » July 21st, 2008, 9:09 am

lewisclan wrote:or do you mean 80:1

Thats where I would put my money.

What are you running it at now J?

dannygraves · Post by **dannygraves** » July 21st, 2008, 9:17 am

ok, you guys are talkign about 2 totally different things now... I would run the alky on a leaner oil mix because you won't need as much oil and it would help it run lean enough to run some gas through it to flush it. with the gas that you are using to flush it, you want a really fat mixture (like 20:1 or 16:1) because that would help it run on such rich jetting.

lewisclan · Post by **lewisclan** » July 21st, 2008, 9:20 am

britincali wrote:
lewisclan wrote:or do you mean 80:1

Thats where I would put my money.

What are you running it at now J?

its got about 7-8 min & 40:1

100hp honda · Post by **100hp honda** » July 21st, 2008, 9:50 am

lewisclan wrote:
100hp honda wrote:
M.F.D.B. wrote:Dude I cant wait!! What did you do about main seals?? Are they alky seals or do you plan to replace them often??
dont banshees use similiar rubber seals ? i havent heard the banshees guys say 1 thing about it ruining thier seals in an untimely manner (except the dumb fukks that let it sit in the motor). jay, keep the motor AND fuel pump purged good and youll be just fine . 20:1 benol mixture will keep it lubed good
20:1 are you sure

28:1-32:1 seems to be popular mix for meth, ive heard some go 40:1 with 927

20:1 gasoline seems to be what guys are purging with

as with anything opinions will vary depending what the individual person likes and you dont need to do exactly this, i was just saying this seems to be the popular ratios from what ive seen on other boards

M.F.D.B. · Post by **M.F.D.B.** » July 21st, 2008, 9:53 am

Ask the cart guys. They run silicone main seals. Also, Alcohol is very "dry" and requires more oil to make up for that. Gas is much more "lubricitive"...

I think you way of thinking on the alky/oil mix is flawed. Its not how much fuel you run though the motor as to how much you are DILUTING it with a dry fuel.

If you clean an oily part in a bucket of solvent, the solvent displaces and strips the oil off the part. Running to little oil is going to "dry" the parts off too much. The cart guys I know of run 20:1 and the r/c motors run even more (castor)...

britincali · Post by **britincali** » July 21st, 2008, 10:00 am

Like I said I could be off base

100hp honda · Post by **100hp honda** » July 21st, 2008, 10:02 am

M.F.D.B. wrote:Ask the cart guys. They run silicone main seals. Also, Alcohol is very "dry" and requires more oil to make up for that. Gas is much more "lubricitive"...

I think you way of thinking on the alky/oil mix is flawed. Its not how much fuel you run though the motor as to how much you are DILUTING it with a dry fuel.

If you clean an oily part in a bucket of solvent, the solvent displaces and strips the oil off the part. Running to little oil is going to "dry" the parts off too much. The cart guys I know of run 20:1 and the r/c motors run even more (castor)...

im sure 20:1 would be fine in lewisclans bike but i think its alittle excessive. typically a bike like jays makes 1-2 short runs then gets shutoff, kart and r/c do 20 laps on a track

M.F.D.B. · Post by **M.F.D.B.** » July 21st, 2008, 10:05 am

britincali wrote:Like I said I could be off base

You?? NO!!

M.F.D.B. · Post by **M.F.D.B.** » July 21st, 2008, 10:07 am

100hp honda wrote:im sure 20:1 would be fine in lewisclans bike but i think its alittle excessive. typically a bike like jays makes 1-2 short runs then gets shutoff, kart and r/c do 20 laps on a track

Its possible, but oil is cheaper then aluminum and steel...

I say, let the motor tell you, spooge??

britincali · Post by **britincali** » July 21st, 2008, 10:08 am

IMO the "lubricity" of gas has nothing to do with it, run a two stroke on straight gas and Ill guarantee it lasts about the same as on on straight alky.

I still want an explanation why double the fuel does not equal double the oil ending up in the motor.

100hp honda · Post by **100hp honda** » July 21st, 2008, 10:10 am

Pstoffers will be there. im sure him and lewisclan will get it figured out

100hp honda · Post by **100hp honda** » July 21st, 2008, 10:14 am

britincali wrote: I still want an explanation why double the fuel does not equal double the oil ending up in the motor.

we aint that smart

M.F.D.B. · Post by **M.F.D.B.** » July 21st, 2008, 10:22 am

Think of it this way, take a cup of gas and TWO cups of alky, put the same amount of oil in each cup and see how "slippery" the alky is compaired to the gas. Its DILUTED twice as much. Then you have to take into acount the fact that not all of the oil drops out of suspension as the fuel/air charge flows through the motor. Also, oil only "pools" in the bottom end (to lube the bearings) at lower rpms. High rpms suck out and remove much of that oil, twice the fuel going through the motor means twice as much oil being sucked out of the bottom end pool.

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dannygraves · Post by **dannygraves** » July 21st, 2008, 10:27 am

M.F.D.B. wrote:
The thoughts and veiws of MFDB are solely of MFDB and do not reflect the veiws of www.bannedcr500riders.com, its affiliates, spondors, co-sponsors, wookies, wookie family members or El Presidente Bushy. Use this info at your discression as the is no warranty, expressed, implied, given or expected.

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Methanol - C-12 & Nitrous injected CR500