E clip position on needle

malone · Post by **malone** » Sun Dec 28, 2008 6:48 pm

On my 76 440 the manual states that the E clip should be on the second ring from the bottom. it seems a little rich and sputtery off the start on that setting, it seems to run allot better on the second ring from the top, 2 notches up from what the book says. I remember running the engine on the factory settings just like the book said when it was in the liquifire chassis. And it ran great. Is there some reason why it likes it a little leaner in the polaris chassis. could there be some other issue that is causing it to act like this??

Post by **ICCSF 108** » Sun Dec 28, 2008 7:49 pm

my fine tune manual says 76 Liquifire 440 # 3 slot & to use # 2 above 8000'
Are you using a Deere air box or the Polaris one?

Kenny

malone · Post by **malone** » Sun Dec 28, 2008 7:53 pm

deere w/out rubber hose

malone · Post by **malone** » Mon Dec 29, 2008 10:42 pm

so #2 is not necesarally going to harm any thing as long as it runs good on the leaner setting??? I was also thinking that because I am using the polaris secondary and john deere primary, that the gear ratio between the mix mach combo might not be exactly optimum or something might not be exactly right for the richer #4 notch. although the polaris secondary is the same diameter as the original JD secondary. I asked a question about putting on a stiffer primary spring to get a higher rpm engagement, I thought I might be able to leave it on #4 if it weren't trying to engage at like 3,000 or so.. I know the gearing in the chain case should be more than enough because the ratio is out of an indy 400. I think I have narrowed it down to something between the two clutches. and unfortunately that is not my strong point. I have read everything I could on here to try and understand really how it works but I have never taken one apart or really even messed with one at all. So any advise would really help, like what spring would do what I am looking for. I read on here that someone put a white spring on the primary and that helped him.

Thanks allot,
Dave

malone · Post by **malone** » Mon Dec 29, 2008 11:46 pm

Can I just throw a tighter spring in there and raise the rpm of engagement. If so what color do you recomend. what is the pitch depth?? On the 76 lf engine. I didnt expect such a change in performance just by putting the engine in a polaris. I mean the gears in the chain case should be low enough because they are lower than what was in the 76 lf. I think that it almost has to be something in the way the 102-c set up for my 76 motor is working with the secondary that came on the polaris. The polaris came with a 600cc engine so maybe the secondary is set up some how for a more powerfull engine. if so how can I set it up for a more weaker engine??

JDT · Post by **JDT** » Mon Dec 29, 2008 11:52 pm

The polaris weighs 200 lbs more. That is the problem.

It would be like putting a Jetta engine in a Bentley.

malone · Post by **malone** » Mon Dec 29, 2008 11:59 pm

are you sure That old lf I remember weighed a TON.. Plus correct me if I am wrong but shouldnt I be able to compensate with some gearing. I significantly lowered the final gear ratio on that sled. and when that engine reaches 4000 or so that sled absolutely flies, it is just a little sputtery and slow off the start. I think I got the sputters to go away by leaning it out to the #2 notch. I am pretty sure I can cure it with clutching. I just don't know a dam thing about them.. like what spring is supposed to be in a stock 76 lf for starters and what color of spring will give me a higher rev engage w/out changing weights or a bunch of other stuff

JDT · Post by **JDT** » Tue Dec 30, 2008 12:05 am

Even if everything was dialed in you have a 40 HP engine in a sled designed to use an 80 hp engine. The math makes for poor performance in my book.

malone · Post by **malone** » Tue Dec 30, 2008 12:32 am

OH I thought I read on here that the 76 340 was around 45 or something like that. I thought the 440 should have more than that. If 40 hp is the case I am sorrily mistaken. If I am seriously under powered than I should put the motor in a spit fire or something smaller.

JDT · Post by **JDT** » Tue Dec 30, 2008 1:17 pm

Is that what you have in your 80 Rich?

David I do not know what the HP rating of your engine is but I am sure it is substancily less than the 600cc Fuji.

JDT · Post by **JDT** » Tue Dec 30, 2008 2:00 pm

I used to have one of those Centurion Indys. Very sexy machine. Also had a TX Limited. 500 FA was a monster but hookup was a serious issue.
Both were sold as I do not collect Polaris. But I do have a couple of Sears SnowSporters.

malone · Post by **malone** » Tue Dec 30, 2008 2:36 pm

Perfect!! That's All I needed to know. I will look for that manual on ebay. it sounds like it would be a real help full item for me. Thanks again for the help.

Dave

harleysportster · Post by **harleysportster** » Tue Dec 30, 2008 6:51 pm

David,
I will help the cause here and offer a free 76-78 Fine Tune Manual in PDF form, just PM me with your email.

malone · Post by **malone** » Tue Dec 30, 2008 8:32 pm

Sweet.. How do I pm you??

harleysportster · Post by **harleysportster** » Tue Dec 30, 2008 9:00 pm

click on my name from any of my posts, then click on PM.