ok so i know all the things that are required. to do the turbo NA. but i have one thing i need clearified. if you have a NA block, and you decide to delete the 6 port and just use stock turbo ii intake manifolds. i am aware that it isnt a direct fit and there is some dremelling required and what not.. would the dremmelling still be required if you switched your irons to turbo irons instead of na irons? im talking about switching all 3 of them.

 

so..you want to make a turbo engine with NA rotors?

 

yes i do and i have researched it quite a bit. its just that i need to replace my rear iron and i puirchased a turbo ii rear iron for cheap. and i found out that supposidly it will not fit because of the 6 port stuff. if i totally get rid of my 6 port stuff and decide to go with all tii manifolds, will the manifold match up to the na block.

 

The block wouldn't really be a N/A then. You might as well replace everything if you're that far. Remove the diffusers in the exhaust sleeves, add the oil shield to the oil chain. You can reuse the rotors. But essentially it'd just be a high compresson TII block then.

 

oh haha. well thats my plan now because i ordered a turbo ii rear iron. oh one more question, i ordered an s4 rear iron. does that matter since i have a s5 block and plan on using s5 manifolds?

 

bump/ i just wana make sure that s4 turbo ii irons are interchangable with s5 turbo ii irons

 

Have you ever rebuilt a rotary engine? You are going to screw something up if you try to do performance modifications without understanding the basics. Is your engine apart? What is bad?

 

i understand the basics, and my engine is complettly apart adn cleaned. i just wana know if s4 turbo ii irons will match up to an s5 tii intake manifold. my rear iron is bad in my na engine. i was planning on replacing the na irons with s4 tii irons. i have a s4 tii rear iron hence my question about will s5 tii manifolds match up to s4 tii irons. if they do i plan on just replacing all my na irons with turbo ii irons. and then using tii s5 manifolds. so does anyone have a answer for me or just more questions

 

If you replace the irons for turbo ones, then the intake ports will match your turbo intake manifold ports, so yes the manifold will fit.... It's funny people spend more time asking questions when they can just answer them in the same amount of time spent questioning...

 

i know that a s5 turbo manifold will fit s5 turbo irons.. and i also know that s4 turbo manifold will fit s4 turbo irons. now i just wanted to make sure that the S5 TURBO MANIFOLD will fit S4 TURBO IRONS.

 

Turbo intake manifolds will fit turbo intake iron ports, they are the same.... except s6, they need modification... Same way as you can fit N/A s4 intake manifolds on a S5 N/A block and vise versa....

 

ok thanks i know thats the way it is for na s4 and s5. i just wasnt sure if that was the case for tii's

 

it will work but the LIM and holes on the plates should still be port matched since you have it apart.

 

is the port matching only required because it is a turbo s5 manifold and turbo s4 irons?

 

the oil pump is also different between a T2 and n/a engines, course no one ever mentions that... then again all the people who talk about it seem to know everything there is to a rotary engine!

yes, the ports are slightly larger on a s5 turbo 2 vs a S4, you could just bolt it on but the ports on a S4 LIM will be smaller at the mouth.

 

yeah thats a really good point...since imswitching my front iron to a s4 turbo ii i will probally also want to..... i guess have to switch to a turbo ii s4 front cover and turbo ii oil pump etc.. is there a diference between s4 and s5 front covers? and is there a difference between s4 and s5 turbo oil pumps?

and hey guys thanks for all this really useful information, im glad im not just getting flamed for wanting to do a turbo na project

 

no difference between the pumps but there is a difference between the timing cover and water pumps. the difference between the 2 is the OMP and how the engines are clearanced for each, you can just tap a hole in the n/a front cover for the drain.

 

ok well i am getting rid of my OMP because it was totally spazzing out and im going to run premix. will it be ok to just use the na s5 water pump and and na s5 front cover if i remove the omp?

 

ok so i am going to have to convert to a turbo ii oil pump. correct?

 

What's the difference?

 

depth of the pump, the T2 pump has almost twice the depth to flow more oil.

 

what exctly is required to switch to a tii pump? can i still use the stock s5 na front cover?

 

just bolt the pump on, they have the same physical dimensions but they are built differently inside.

 

ok cool. thanks for the help. is this a mod that people generally look over or something when turboing their na engines? because i have never heard of this before...even on aaron cakes almost complete guide on turboing the na engine....

 

I suggest you get all the parts and have a rotary shop build the engine for you.