here's the deal. Up until tonight I was going to turbo my na motor; i already had planned everything as far as placement for oil and water etc and have all the parts i need either here or en route. Then I started thinking what if i just made my own out of used parts. I was curious as to how this should be done or has been, since there are a great many people on this forum wiser than i am about these things. Most likely I'm going to still turbo an na block just because i can almost get the same amount of power and cost less as far as getting the initial parts. If I'm incorrect please correct me though. Is it possible to buy random parts like housings irons and rotors and rebuild them into a complete engine. or do they need to be matching somehow? and aside from the rotors what are the main differences between the hardware of just the engine on the two. rotor housings because of the 6 port. but the irons should be interchangeable right? Thanks for any help opnions or input as always.

 

More info: http://www.aaroncake.net/forum/forum...urbocharged+NA

 

Check the FAQ for turboing an N/A, it's covered there with some helpful links.

Differences in a turbo and n/a block, lets see. The Irons are different because the n/a has 6ports and the turbo has 4, the housings are different because the turbo doesnt have the diffusers in the exhaust port like the n/a's and turbo housings have a place where coolant comes out for the turbo that the n/a's don't, rotors are different turbo being lower compression than n/a, etc some other minor things.

If you want your block to stay n/a but make turboing your n/a easier, keep the irons for the 6port, keep the high compression rotors, and use turbo housings so there is no diffuser and you have the ease of the coolant feed for the turbo.

 

The rotors must match in weight & compression.
The counterweight (seperate on in the flywheel) must match the rotors.
The intake manifold needs to match up to the side plates.
The turbo and automatic bell housings & starter are diferent then the NA.

After that, you can pretty much rig whatever.

 

Let's make this easier:

There is no common part between the NA and turbo block besides the eccentric shaft, seals, oil pan and some other misc hardware.

There are engine build threads in the archives, and buying the video from Bruce Torrentine is a great step.

If you search for "engine build", there have been several threads in the past few weeks with lots of info.

 

Yes.. before you go any further... get the Broce T video from Rotaryaviation.com and watch it... its will answer almost all of your questions