C2 FI distributor overhaul specifcations

[Jerry G.]

i'm rebuilding an 070 FI distibutor. In the service manual I don't find rebuild specifications for an FI distributor. Spcifically gear end play and shaft end play. What am I missing where in the manuals is it?

[Jim T.]

Re: C2 FI distributor overhaul specifcations

i'm rebuilding an 070 FI distibutor. In the service manual I don't find rebuild specifications for an FI distributor. Spcifically gear end play and shaft end play. What am I missing where in the manuals is it?

Jerry in my 1963 Corvette Shop Manual is has .002 for shaft runout and .002-.007 for the end play for the distributor.

There is very good distributor rebuild information on www.tipsecialty.com
Under articles, the information is at the bottom left for complete rebuild information. In this article it has .010 for end play. The article does mention that it is not for fuel injection distributors.

I use the .002-.007 information in the 63's manual for my 68 and 70's distributors.

[Tom P.]

Re: C2 FI distributor overhaul specifcations

When I go through an FI dist, I try to go with .002-.004in end play for the cross shaft and .003.-005in end play for the main shaft.
Keep in mind, the FI dist has its own constant, presurized oil feed (about 55-60lbs) which all other dist do not have.

[Jerry G.]

Re: C2 FI distributor overhaul specifcations

When I go through an FI dist, I try to go with .002-.004in end play for the cross shaft and .003.-005in end play for the main shaft.
Keep in mind, the FI dist has its own constant, presurized oil feed (about 55-60lbs) which all other dist do not have.

Thank you that's what I was looking for.I'm a little surprised the FI distibutor is not in a service manual.

[Jack H.]

Re: C2 FI distributor overhaul specifcations

Jerry in my 1963 Corvette Shop Manual is has .002 for shaft runout and .002-.007 for the end play for the distributor.

There is very good distributor rebuild information on www.tipsecialty.com
Under articles, the information is at the bottom left for complete rebuild information. In this article it has .010 for end play. The article does mention that it is not for fuel injection distributors.

I use the .002-.007 information in the 63's manual for my 68 and 70's distributors.

I think you meant http://www.tispecialty.com/

[Jerry G.]

Re: C2 FI distributor overhaul specifcations

The FI distributor is a different design. it has a cross shaft that drives both the tach and the high pressure pump. i haven't seen in the service manuals information for FI distributors. I don't think the end play information for the non FI distibutor is appropriate. See Toms note above. Thats what I was looking for. Thanks for your ideas. Jerry

[Dick W.]

Re: C2 FI distributor overhaul specifcations

Even the Delco Remy Service Bulletin 1-D-151, which deals with the 070 distributor, is strangely silent on that information

[Tom P.]

Re: C2 FI distributor overhaul specifcations

For those of you who have ever had an FI dist apart, they you have noticed there are a MINIMUM of 4 shims on the entire dist.
1. One between the lower housing and the dist drive gear.
2. One between the cross shaft drive gear and the lowre housing.
3. One on each side (and they are differend ODs) of the cross shaft gear.
This is the MINIMUM amount of shims I've ever seen on an FI tach drive dist, which was built by Delco. Soooooooooo, along with these minimum shims, PLUS, the full pressure oil supply feeding the dist, I feel this is a minimum starting point for setting up an FI dist.
Since FI dist have their own pressurized oiling, as opposed to a lower volume oil supply on a carbed engine dist, I feel VERY COMFORTABLE with slightly tighter clearances between the housing parts and the gears/shims.

For a carb dist, I shim them .005-.008 at the drive gear/lower housing.

NOW, UNDERSTAND CLEARLY, the above IS NOT gospel, that's just how I've been setting them up for 40+yrs (30+yrs on FI dist) and have seen ZERO problems.

[Jerry G.]

Re: C2 FI distributor overhaul specifcations

Even the Delco Remy Service Bulletin 1-D-151, which deals with the 070 distributor, is strangely silent on that information

I agree that is strange. If not for experienced souls like Tom I'd be without guidance, and I need a lot of guidance. Thanks guys

[John H.]

Re: C2 FI distributor overhaul specifcations

All of the Delco Assembly drawings I have for F.I. distributors show .002"-.007" or .002"-.010" for the end play spec between the top of the gear and the bottom of the housing.

[Jerry G.]

Re: C2 FI distributor overhaul specifcations

All of the Delco Assembly drawings I have for F.I. distributors show .002"-.007" or .002"-.010" for the end play spec between the top of the gear and the bottom of the housing.

John , your talking about the gear that drives the cross shaft that is pinned to the main shaft, correct?

[John H.]

Re: C2 FI distributor overhaul specifcations

John , your talking about the gear that drives the cross shaft that is pinned to the main shaft, correct?

Jerry -

I'm talking about the drive gear that's pinned to the bottom end of the mainshaft, driven by the helical gear on the camshaft.

[John D.]

Re: C2 FI distributor overhaul specifcations

Jerry, I do believe Hinckley is referring to the bottom gear. His statement of .002 to .007 is correct.
One time I looked at a Delco Remy blueprint of an 022, etc and it said to shim as required.
Long time ago there was a discussion here on this subject. But Jerry you have all the info you need.
Now I know you are building a race car Jerry. But whatever you do just use a stock M55 Melling oil pump. It's all you need. If you use a high pressure or hi flow oil pump the shimming of the bottom gear will be the least of your worries as you will drown out the points with oil.

[Jerry G.]

Re: C2 FI distributor overhaul specifcations

Jerry, I do believe Hinckley is referring to the bottom gear. His statement of .002 to .007 is correct.
One time I looked at a Delco Remy blueprint of an 022, etc and it said to shim as required.
Long time ago there was a discussion here on this subject. But Jerry you have all the info you need.
Now I know you are building a race car Jerry. But whatever you do just use a stock M55 Melling oil pump. It's all you need. If you use a high pressure or hi flow oil pump the shimming of the bottom gear will be the least of your worries as you will drown out the points with oil.

BOY, this building a racing FI car is tough. Jim has been a GREAT help. Thankyou all. Jerry

[Duke W.]

Re: C2 FI distributor overhaul specifcations

.
Now I know you are building a race car Jerry. But whatever you do just use a stock M55 Melling oil pump. It's all you need. If you use a high pressure or hi flow oil pump the shimming of the bottom gear will be the least of your worries as you will drown out the points with oil.

I agree with the standard volume pump, but since I think Jerry is revving as high as 7500, don't you think he should run the 55-60 psi spring, which would essentially be a '65 OE spec SHP/FI pump and spring?

Duke