@DON has Yella Tera rockers on one of his engines. Maybe he can give you some insight.
All Small Six 200 itb side drafts
- Thread starter Dragonlich1961
- Start date
This relates to all small sixes
Dragonlich1961
Well-known member
Thats a great help for a starting point, i'll start there and see what it looks like. Any idea what the shim total was?I used the Smith Bros. Part # NH312B-FB. 3/8 x .120 5130 HT W/OIL. Actually, let me just take a pic. The length is down lower: 8.250. I think the rocker geometry came out pretty good. I did have to shim up the stands
Dragonlich1961
Well-known member
Fuel rail is back from my mates. Woot. This is the first time that this head and throttle combo has been in this engine bay. And damn it looks good. Also, damn is it tight...
Lower heater line run into the butterfly shaft, haven't figured that one out yet. (Vinatge air heater gen 4 magnum kit). Fuel rail sit close enough to firewall, i will not be able to run a return style system on the rail. I have no room for the fitting, so dead head will have to do. (I have a bypass style regulator).
The front air cleaner will be tight to the alternator, and that will be tight to the tps. I originally had other mounted on the back of cyl 6 to keep it clean, but see above heater line issue. So it will have to live on the front, but because I moved it, I will have to order a new one that rotates the other direction... grrr.
I'm debating about moving the alternator back to its factory location, which means modifying the cyl 1 primary to allow this. I know Paul S does this. For those not abridged- the alternator is relocated up due to A/c. And relocated out due to the header, both work fine by them self, but not together. The fix is either move the alt over or modify the header. it's easier to move the alt, but looks like I get to take the road less traveled....
Checking push rod length- as I will have to order some for the new roller rockers. I beleive I'm correct on procedure. Color valve tip with sharpie, install rocker, adjust pushrod till touching then give a bit more for preload, cycle engine by hand 1 full 720 rotation, remove rocker check mark on rocker.
Initially, zero shim pass, wear mark is to the driver side, indicating the rocker needs to move up.
Second pass with 2 shims(.120 total) moves the mark just past center to the passenger side( away from pivot). This gives me a pushrod at 8.125.
DON, did you shim under the rockers, or under the rocker bridge/plate.
Lower heater line run into the butterfly shaft, haven't figured that one out yet. (Vinatge air heater gen 4 magnum kit). Fuel rail sit close enough to firewall, i will not be able to run a return style system on the rail. I have no room for the fitting, so dead head will have to do. (I have a bypass style regulator).
The front air cleaner will be tight to the alternator, and that will be tight to the tps. I originally had other mounted on the back of cyl 6 to keep it clean, but see above heater line issue. So it will have to live on the front, but because I moved it, I will have to order a new one that rotates the other direction... grrr.
I'm debating about moving the alternator back to its factory location, which means modifying the cyl 1 primary to allow this. I know Paul S does this. For those not abridged- the alternator is relocated up due to A/c. And relocated out due to the header, both work fine by them self, but not together. The fix is either move the alt over or modify the header. it's easier to move the alt, but looks like I get to take the road less traveled....
Checking push rod length- as I will have to order some for the new roller rockers. I beleive I'm correct on procedure. Color valve tip with sharpie, install rocker, adjust pushrod till touching then give a bit more for preload, cycle engine by hand 1 full 720 rotation, remove rocker check mark on rocker.
Initially, zero shim pass, wear mark is to the driver side, indicating the rocker needs to move up.
Second pass with 2 shims(.120 total) moves the mark just past center to the passenger side( away from pivot). This gives me a pushrod at 8.125.
DON, did you shim under the rockers, or under the rocker bridge/plate.
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Jmustang_65
Famous Member
Nice looking setup. I have a similar setup and its tight.
What about this banjo style an6 fitting in the back. Still too tight?
What about this banjo style an6 fitting in the back. Still too tight?
Dragonlich1961
Well-known member
I think so. The rail is super close, but it's also going to be very tight with everything else back in that corner, so i'm thinking it might be better to just run a dead head system. Several factory aplications do this, and i've done it before with big v8's. The rail came pre tapped for -8 ORB. There is a 1-2 inches after the injector that could be trimmed, but that would require either a re tap- or weld on fitting- my aluminum welding is ok, but I'm not confident in the welding this.
In my opinion with the injectors, rail, over the headers I would not go dead head, I would mod the rail to get a fitting on in the rear of the rail, maybe on the top. You are going to want the cooling of the fresh fuel.
I placed the shims ( washers ) under the pedestals. You could probably put them under the bridge plate, I just thought keep the base of the rocker setup as stable as possible, then go up from there. It is probably easier to place them under the pedestals. Not sure in reality how much difference it would make
