Autolite 1101 adjustment

[CZLN6]

Howdy:

Good choice on plugs. You might want to try a set of 45 heat range, especially for summer use. I usually wait til I see them on sale at one of the parts stores. The 46s may be a little hot for all out running. Anyway, you probably won't be able to tell much difference goin' to 20 from 24 initial in performance. Once you get the best advance setting determined, go back and set the low speed idle with your vacuum gauge. Do you have any data on mileage- before and now? How does it compare?

Adios, David

 

[Johnsondawg]

David, I have not been keeping track of millage yet. I believe it is worse now biased on additional trips to the gas station but I have not looked at it much because I realized that my speedo reads low due to my larger than stock tire size. I also need to look at getting a new Instrument cluster voltage regulator as my gauges are reading low. I was out at my local junkyard yesterday and was not able to find any Autolite/Motorcraft jets for my carb. They had lots of 2100's but the jets in those are smaller than what I need.

 

[CZLN6]

Howdy:

"They had lots of 2100's but the jets in those are smaller than what I need."

Not necessarily. I frequently take jets from 2100s and 2150s for my stash. 2100s in the 1.08 size used on full size Cars will have jets in the 67 range. 1.21 and 1.23 size carbs used on 352s, 351s and 390s will have larger jets too. It doesn't take long to pop open the top on a 2100 to check the jet size. Many recycle yards don't even bother with Autolite carbs so pieces and parts might be had for your trouble.

IF you go back to retry the 63 jet, you will likely want to reduce ignition advance again. It might also be the time to try some 45 heat range plugs.

Once you get the engine tuned reliably, coming up a standard to assess mileage, can add to your fine tune of your combo. It doesn't have to be perfect in terms of speedo accuracy, just repeatable.

Adios, David

 

[Johnsondawg]

I probably should have kept looking in the 2100's then. I opened up four of them and the largest jet I found was a 57 so I figured it was going to have to come from an 1100 or an 1101 to get something in the 65-68 range. I guess I should have been more persistent. I actually trashed a couple 2100's a year ago. I wish I would have thought to pull the jets then but at the time I was convinced that I should run a webber on this engine. Hindsight..... Anyway, I'm going to play with this some more today. I believe the vacuum leak is now sealed up but I need to double check that before I get too deep in this. Before I do anything, I have to go blow out my sprinklers. We are supposed to get snow by Wed. with lows in the teens.

 

[bmbm40]

Good to see more six cylinder Bronco's hope you get your carb sorted out. Some of those 2100's at the yards might be good to collect if you got them for a few dollars- guys on this forum look for them. I think the 1.01,1.02 and 1.08 are in high demand. Also any 77-80 250 engines or heads. Getting much harder to find this stuff in yards.

 

[chad]

Also any 77-80 250 engines or heads
Y'all caan let me know when U do go, I;m lookin for the latter for the '69(I think)...
Stay warm 'Colaradie'

 

[Johnsondawg]

Good to see more six cylinder Bronco's hope you get your carb sorted out. Some of those 2100's at the yards might be good to collect if you got them for a few dollars- guys on this forum look for them. I think the 1.01,1.02 and 1.08 are in high demand. Also any 77-80 250 engines or heads. Getting much harder to find this stuff in yards.

I can't even begin to tell you how many people told me to put a 5.0 in this Bronco. I wanted this one to look stock but wanted more performance and creature comforts. Besides I have three early Broncos A 74 with a 351W and Fuel injection. That one is built for the trail. I also have a 68 with a 302 that I got because the deal was too good to pass up. And then I have my 66 it is an early production Bronco that had the original 170 in it. I went with the 200 to have it look original but offer a little more power. I also added power steering, disc brakes, and a 3G alternator as it is my daily driver. The C4 was never an option on a six cylinder Bronco so that took some work to get it married up to the transfer case. To the best of my Knowledge it is the only six cylinder Bronco with an automatic transmission out there. I have been told there are others but have never seen one or even talked to anyone who has seen one first hand. The biggest issue I have with the combo is that the Bronco is heavier than falcon's, mustangs, and anything else that had this combination. In addition to the weight, I'm also dealing with larger tires ( 31x10.50 15's). I have seen one van that might be similar in weight with a 200 and a c4 but that was in the junkyard. Anyhow, I have been learning the inline 6 as I go. In hindsight, I would have done a few things different on this build. I never considered the lack of torque converter options, I would like a higher stall speed but I only found one torque converter available ( The one with the ring gear welded to it instead of the flex plate ). I also would have sourced a more suitable cam and milled a bit more off of the head. All things that I can change in the future but for now I want to squeeze it for every once of power I can get. I would also like to add a header at some point but they seem a bit pricey as headers go. I can buy headers for a small block for less and there are two of them! ( I know, I know, its about supply and demand). All that said, I would love to hear any suggestions for performance upgrades. One thing I would love would be to find someone who knows these sixes in my area. I have tons of Bronco friends locally but none of them know the inline six. Thanks to all for your input. Here is a link to the C4 and 200 install I have posted on Classic Broncos. http://classicbroncos.com/forums/showth ... p?t=176298

 

[Johnsondawg]

David,

I almost forgot, What I thought was a Felpro head gasket is not I found my gasket set box and it is actually "Engine Pro" . I didn't pick it, it came with the engine rebuild kit ordered by the machine shop. I have no idea what the compressed thickness is of the gasket is.

 

[woodbutcher]

Hi Johnsondawg.Liked the build thread on classicbronchos.Keep up the good work.
Good luck.Have fun.Be safe.
Leo

 

[Johnsondawg]

This evening I attempted to set up my choke in anticipation of our forthcoming snowstorm. While doing that I also adjusted my throttle cable because it was only opening up the throttle butterfly about 90% with the pedal mashed to the floor. In the midst of doing this while letting it idle and while test driving I noticed that the engine runs very, very smooth at idle and gets a bit rougher ( to the point where I can feel a slight vibration in the vehicle) above 1000 RPM. It will continue to do this up to 2000 or 2200 RPM then smooth right back out above that. It's roughest around 1500 RPM. Now it is not anything extreme but it is enough that I notice it. Obviously, I notice it a lot in stop and go type traffic. Is there anything I should consider adjusting here or am I over thinking this? I never noticed this with the original 170 but it was married to a 3 speed transmission and now I have a C4. Also, this engine seems to be much smoother overall than the 170 ever was so its easier to notice subtle changes. I assume its smoother due to it having 7 main bearings instead of the 4 that the 170 had. So is this something that should cause concern or something I should chalk up to the fact that it's still a 1968 200 in a 1966 Bronco? If this is not normal what could be the cause?

 

[CZLN6]

Howdy Jeremy:

Can you find out what the compressed thickness is on the Engine Pro head gasket you used?

Is the roughness/vibration under load or no load? It is possible that the vibration is related to the transition circuit of the 1101, but not likely. Are the vacuum leaks all gone?

It possibly feels smoother because of the heavier damper and the centrifugal force of the torque converter.

We're going through a fairly major move in the next few days so if I'm AWOL, not to worry. I will be back.

Adios, David

 

[Johnsondawg]

David, I can try to call the machine shop that I used to see if they know about the compressed thickness. It's been a while since I had the machine work done but maybe they will know. Is there any other way to figure it out short of pulling the head and measuring it? I believe I have the vacuum leak taken care of I used propane and starter fluid and was not able to find any more vacuum leaks. I notice the roughness more while its sitting at idle with no load but I do notice it while driving as well. The roughness is masked a bit by the road though.

Jeremy

 

[Johnsondawg]

David,
I just found the engine pro webpage and sent them an email. With a little luck they will know the compressed thickness.

Jeremy

 

[bmbm40]

I can't even begin to tell you how many people told me to put a 5.0 in this Bronco. I wanted this one to look stock but wanted more performance and creature comforts. Besides I have three early Broncos A 74 with a 351W and Fuel injection. That one is built for the trail. I also have a 68 with a 302 that I got because the deal was too good to pass up. And then I have my 66 it is an early production Bronco that had the original 170 in it. I went with the 200 to have it look original but offer a little more power. I also added power steering, disc brakes, and a 3G alternator as it is my daily driver. The C4 was never an option on a six cylinder Bronco so that took some work to get it married up to the transfer case. To the best of my Knowledge it is the only six cylinder Bronco with an automatic transmission out there. I have been told there are others but have never seen one or even talked to anyone who has seen one first hand. The biggest issue I have with the combo is that the Bronco is heavier than falcon's, mustangs, and anything else that had this combination. In addition to the weight, I'm also dealing with larger tires ( 31x10.50 15's). I have seen one van that might be similar in weight with a 200 and a c4 but that was in the junkyard. Anyhow, I have been learning the inline 6 as I go. In hindsight, I would have done a few things different on this build. I never considered the lack of torque converter options, I would like a higher stall speed but I only found one torque converter available ( The one with the ring gear welded to it instead of the flex plate ). I also would have sourced a more suitable cam and milled a bit more off of the head. All things that I can change in the future but for now I want to squeeze it for every once of power I can get. I would also like to add a header at some point but they seem a bit pricey as headers go. I can buy headers for a small block for less and there are two of them! ( I know, I know, its about supply and demand). All that said, I would love to hear any suggestions for performance upgrades. One thing I would love would be to find someone who knows these sixes in my area. I have tons of Bronco friends locally but none of them know the inline six. Thanks to all for your input. Here is a link to the C4 and 200 install I have posted on Classic Broncos. http://classicbroncos.com/forums/showth ... p?t=176298[/quote]

There are probably only a few dozen Bronco/six owners and I have been following your thread on CB. I have never seen a six with auto in a early Bronco and remember considering an AOD for mine but felt is was beyond my skill level. Six cylinder headers are expensive but the opinion of most is they will provide a bit more power if your head flows well. Be sure and give some driving impressions when you get these details taken care of, should be a nice drive, I know the power steering and disc brakes really changed mine for the better.

 

[chad]

only a few dozen Bronco/six owners
in the immediate state!

 

[Johnsondawg]

David,

Got an email back from engine pro today. They said that they did not have any published data on the compressed thickness of the head gasket but they did say that in there experience the gaskets are closer to .040 than to the .050 thickness of the Fel Pro. Not an exact measurement but at least they gave me an educated guess.

Jeremy

 

[CZLN6]

Howdy:

Did they happen to say who make them for their gasket kit? You might have more luck finding details like compressed thickness from the manufacture.

Are you getting hit by the storm in the news? I'm taking the RV down to St. George, UT next week, in anticipation of winter weather here in Idaho. We won't go south until the end of January. The older I get the less use I have for winter weather. We have had a beautiful fall here in South East Idaho.

Adios, David

 

[chad]

hit by the storm
shore is, but a different storm. Hope it blows itself out in Ohio B4 gettin here. Just got a few inches here. This yr no frost then snow. Snow came 1st?!? Unusual. Got the 4.9 in that RV?

Must B the same ages, 2 - 3 mo of winter's enuff for me as well. Not the 6 - 7 we get (Oct - March)...

 

[Johnsondawg]

David,

They did not say who makes the gasket sets for them. I know that they use Felpro for high performance gasket sets but they indicated that somebody else makes this set. I'll send him another email to see if I can find out.

We got pounded by the storm. I think the official snow fall was 14" here. Two days before the storm hit it was 80 degrees here. We usually get a hard freeze before the first snow but not this time. As a result most of the trees still had leaves on them when the storm hit. I have never seen so many broken trees as we have now!.
I have been trying to get myself ready for elk hunting the week after next so I have not spent as much time on this as probably should. I'll keep you updated and let you know if I find more info on the gasket.

Jeremy

 

[Johnsondawg]

Well I'm back from hunting so I need to get back at this. I'm planning on resetting my float tomorrow . I still have a little problem with it stalling out if I hit the curb at the bottom of the driveway too fast. I also still need to look at a smaller jet. I have been back to the salvage yard a couple more times and have not had any luck finding a suitable jet. I'll probably have to order one unless anyone has some spares for sale.

Jeremy