Gary Wilcox
Member
I thought I would share this with everyone.
I am building a RV-7A and had purchased a IO-360-C1E6, which is an angle valve 200hp model but with a different style sump than the A1B6. The C1E6 sump protrudes rearward and will not fit in the engine mount provided by Vans. Pricing of a used sump and intake pipes off a A1B6 is outrages, if you can find them, they are becoming rare. I looked into the ryton sump from superior but was informed that it had not been tested and was not available at this time for the A1B6 angle valve engine. Upon further investigation, the casing is the same for all 360 models. I went ahead and purchased the ryton sump kit, what a good looking piece!!! The kit is complete with all nut, bolts, washers, oil quick drain, fuel drain, gaskets, intake pipes and intake gaskets. I installed the sump and it went on perfectly, no alignment issues at all. Then I installed the intake pipes.........not what i wanted to see.....the vertical alignment of the pipes is 1/4 inch out of alignment with the pipe coming out of the sump. The angle valve cylinder is larger in diameter which causes the intake port to be positioned 1/4 inch lower. I looked at reworking the intake pipe, which would involve reducing the lenght at the flanged end of the pipe by 1/4 inch and redoing the flare. I thought about cut and weld but did not want to interupt the flow inside the pipe at all. More investigation reveals the XP400 will have a ryton sump offering later this summer and will have intake pipes for the angle valve. Problem solved, wait for the new pipes to come available and get on with the building. I also though what about my exhaust, will it still fit the new configuration????? I hung the exhaust and no interferencr problems at all, whew, that was nice to see.
Now, before I installed anything I wantede to know about weight difference. I loaded all parts of the new and old sump, including nuts, bolts washers, clamps....everything relevant, and weighed them on a certified scale, the Ryton sump configuation is 4.13 pounds lighter than the old sump, lighter is better right.
I also looked at the inside of the sumps, the Ryton is smooth and flows very nice, the Lycoming sump was not flowing and had the surface texture of a highway.
So, all in all, the switch to the new sump was interesting but well worth the time spent investigating the probability. This is a high quality kit and is cheaper than buying a used Lyc. part and wayyyyyy cheaper than buying a new Lyc sump and intake pipes, new Lyc. intake pipes are $1100 each!!!
I hope this answers some thoughts other peolpe may have had regarding this issue.
Gary
I am building a RV-7A and had purchased a IO-360-C1E6, which is an angle valve 200hp model but with a different style sump than the A1B6. The C1E6 sump protrudes rearward and will not fit in the engine mount provided by Vans. Pricing of a used sump and intake pipes off a A1B6 is outrages, if you can find them, they are becoming rare. I looked into the ryton sump from superior but was informed that it had not been tested and was not available at this time for the A1B6 angle valve engine. Upon further investigation, the casing is the same for all 360 models. I went ahead and purchased the ryton sump kit, what a good looking piece!!! The kit is complete with all nut, bolts, washers, oil quick drain, fuel drain, gaskets, intake pipes and intake gaskets. I installed the sump and it went on perfectly, no alignment issues at all. Then I installed the intake pipes.........not what i wanted to see.....the vertical alignment of the pipes is 1/4 inch out of alignment with the pipe coming out of the sump. The angle valve cylinder is larger in diameter which causes the intake port to be positioned 1/4 inch lower. I looked at reworking the intake pipe, which would involve reducing the lenght at the flanged end of the pipe by 1/4 inch and redoing the flare. I thought about cut and weld but did not want to interupt the flow inside the pipe at all. More investigation reveals the XP400 will have a ryton sump offering later this summer and will have intake pipes for the angle valve. Problem solved, wait for the new pipes to come available and get on with the building. I also though what about my exhaust, will it still fit the new configuration????? I hung the exhaust and no interferencr problems at all, whew, that was nice to see.
Now, before I installed anything I wantede to know about weight difference. I loaded all parts of the new and old sump, including nuts, bolts washers, clamps....everything relevant, and weighed them on a certified scale, the Ryton sump configuation is 4.13 pounds lighter than the old sump, lighter is better right.
I also looked at the inside of the sumps, the Ryton is smooth and flows very nice, the Lycoming sump was not flowing and had the surface texture of a highway.
So, all in all, the switch to the new sump was interesting but well worth the time spent investigating the probability. This is a high quality kit and is cheaper than buying a used Lyc. part and wayyyyyy cheaper than buying a new Lyc sump and intake pipes, new Lyc. intake pipes are $1100 each!!!
I hope this answers some thoughts other peolpe may have had regarding this issue.
Gary