ramperf

If you put larger(more lbs per hour) they will flow more lbs per hour all the time. Pulse time is controlled by the ecu. You can increase pulse time by turning up the fuel pressure. This will richen up the mixture. Ron

If your cracks go below the seat ...............Water!!!! I have a set with the crack your talking about and I cut em up for porting. Ron

you can get new waterpumps @ RAM Performance for $39.95

Brad The tuning of the exhaust is in direct relation to the intake, and for the rpm range. Aircraft props act just like a torque converter, or big tires, it stalls the engine at lower rpms therefore needing torque just like you. The exhuast tuning I was talking about is built for, torque, and the higher rpms(5700). Most primarys built are to big in relation to the intake inertia. I use 1.625 od stainless tubing and equalize the ports to flow the same this, to date, has made the best power throughout the rpm range (we test to 6300 rpms). I have made as much as 136 lbs torque @ 3300 rpms with a small cam (which is the limiting factor for aircraft). If you read all the posts, you will see that most guys are using Y pipes,which is good. In order to make a tuned header, the primary lengths need to be exact (for equal pulse) and the diameter correct and tied with a collector. Ron

Shanonsf I have tested many an exhaust on my dyno and the best way for resonance tuning an power is to make equal 33 1\2 primarys and to collect them with a 2" outlet. This system yeilded 6hp on the dyno. Ron

put a weber on it , it will make more power and have better throttle response. Put a better intake on it and you will realize the full poteintial of the weber. Throw the solex away. Cheers Ron

sorry didn't get it or lost it. I 'll check again Ron

it will go right in. have one in pilly with a weber. had to put a small turbo bubble in hood

jon, go to ramengines.com and look around. I think it would be better for you to look at a long block it will save your $ in the long run. my price for a turbo long block is $3795 Less $200 for your core if you care to trade it in. Plus the intake.I can price out all the parts for you, if you still want. Ron

You send your heads and the price is $995.00 to convert. This conversion is the intakes only but the exhaust is equalized and both are flowed. The intake is built for the flange of the throttle body you are using and flowed also for $555. The water provision and the injector bosses are extra. The 130hp you saw was with a single carb not turbo.On my dyno with 8lbs boost our engine produced 200hp. This engine in stock configuration will n ot hold up to this and I had to install my forged pistons,ss valves,bronze stepped guides, roller rockers, extra dowlings in the mains, etc. So turn down the boost and enjoy. Ron

You will have to make a complete intake system but it can be done or you can send your heads to me and I can dual port them for you and build the manifold to accept your turbo, this is less money to do than just the sub4 heads. I also build new cams for this engine to take full advantage of the heads. Ron

The ea71 and the ea81 bellhousing and intake are not the same. The 71 is about 1" shorter than the 81. and the flywheel has a smaller pattern than the 81. these parts are not interchangable. Ron

Unless you have a higher compression ratio. The higher the octane the slower the burn. Ron