turbo II or cosmo block? which one is better?
#1
turbo II or cosmo block? which one is better?
I am gathering parts for my engine swap. I have my TII tranny and my new 13b header. and a atkins 7in supercharger will be comming soon.
I have decided to run the a low compression engine.
But I was wondering. should I go with a TII block or a cosmo block.
I have heard the cosmo has better port timing.
what makes the cosmo block better? and is it harder to swap than a TII block?
I have decided to run the a low compression engine.
But I was wondering. should I go with a TII block or a cosmo block.
I have heard the cosmo has better port timing.
what makes the cosmo block better? and is it harder to swap than a TII block?
#3
Um i think the RE pre-dates the REW, but it should be better then a S4 TII. The S5 TII is also thicker near the dowels..
I have read there is almost 0 difference between the S5 TII block and the RE and REW besides ports. So if you port a S5 block it will be nearly identical..
And any of the block bolt right into a 1st gen if you change out the oil pan and front cover..
-Zach
I have read there is almost 0 difference between the S5 TII block and the RE and REW besides ports. So if you port a S5 block it will be nearly identical..
And any of the block bolt right into a 1st gen if you change out the oil pan and front cover..
-Zach
#6
Well, you need to realize the S4 & S5 blocks come with a single turbo and the S5 has a better turbo.
Now the REW and RE engines come with twins..
The RE & REW would have to be converted to run in non-seq.
If you don't plan on building the engine, and keeping whatever turbos it comes with i would go with the 13B RE.
-Zach
Now the REW and RE engines come with twins..
The RE & REW would have to be converted to run in non-seq.
If you don't plan on building the engine, and keeping whatever turbos it comes with i would go with the 13B RE.
-Zach
Trending Topics
#8
I can has a Hemi? Yes...
iTrader: (2)
Here are the differences between the 13BT and 13BREW (and RE) engines.
He wanted to run a supercharger anyway, so he won't need the twins.
Up to about 400 HP, just about any 13B block will do.
Porting will equalize any advantages any one engine's port sizing has over another. Once you go with Higher HP (400+), you want the beefier cast RE and REW, especially if you're gonna dowel pin the engine.
A Supercharger won't get you to 400HP on a rotary anyway. So just get the newest, least milage one you can get, since you're not rebuilding it or porting and you should be fine.
He wanted to run a supercharger anyway, so he won't need the twins.
Up to about 400 HP, just about any 13B block will do.
Porting will equalize any advantages any one engine's port sizing has over another. Once you go with Higher HP (400+), you want the beefier cast RE and REW, especially if you're gonna dowel pin the engine.
A Supercharger won't get you to 400HP on a rotary anyway. So just get the newest, least milage one you can get, since you're not rebuilding it or porting and you should be fine.
#12
Um, i think cork is a little pricey, how much do they want for a TII block
Usually S4's go for ~$550 and S5's go for ~$750..
There are tons of engine imports, check around..
-Zach
Usually S4's go for ~$550 and S5's go for ~$750..
There are tons of engine imports, check around..
-Zach
#14
Check these:
http://www.nippon-motors.com (750-950)
http://www.jspecjdm.net (call)
And i thought teamfc3s.org use to sell engines, but can't find the info..
-Zach
http://www.nippon-motors.com (750-950)
http://www.jspecjdm.net (call)
And i thought teamfc3s.org use to sell engines, but can't find the info..
-Zach
#16
EX Pres of DFW Drunks
#17
EX Pres of DFW Drunks
#20
I can has a Hemi? Yes...
iTrader: (2)
Originally posted by 82streetracer
I just saw something, s4 use mechanical oil sending units, and s5 use electrical, I planed on running premix so would a s4 work better. Or wouldnt that matter.
I am leaning tward s4 becuase I dont care for the better turbo or manifold
I just saw something, s4 use mechanical oil sending units, and s5 use electrical, I planed on running premix so would a s4 work better. Or wouldnt that matter.
I am leaning tward s4 becuase I dont care for the better turbo or manifold
Those have mechanical Oil Injection pumps.
That's what I am using on my Cosmo engine as well.
#22
Moderator
iTrader: (3)
one question here ... and i've never used or worked with a supercharger, so i may be a bit ignorant - so forgive me, but ...
wouldn't you want the higher compression ratio of the S5 13B-T for better streetability, since your boost will now be RPM-based, instead of exhaust-based?
try the Gen II forum and see how much boost the 9.4 rotors can take ... i don't know, but i was thinking that though i agree you'd want to have lower compression for higher boost levels, i'm just wondering if the turbo 13B's have enough to keep you happy on the street.
wouldn't you want the higher compression ratio of the S5 13B-T for better streetability, since your boost will now be RPM-based, instead of exhaust-based?
try the Gen II forum and see how much boost the 9.4 rotors can take ... i don't know, but i was thinking that though i agree you'd want to have lower compression for higher boost levels, i'm just wondering if the turbo 13B's have enough to keep you happy on the street.
Last edited by diabolical1; 09-20-02 at 04:25 PM.
#24
Driven a turbo FB lately?
iTrader: (1)
Originally posted by 82streetracer
yeh just the block.
I will probably never exceede 15psi.
I have been looking and buying a jspec engine from cork and parting out everthing I dont need.
yeh just the block.
I will probably never exceede 15psi.
I have been looking and buying a jspec engine from cork and parting out everthing I dont need.
Thread
Thread Starter
Forum
Replies
Last Post
KAL797
Test Area 51
0
08-11-15 03:47 PM