b18c5 bad for turbo?

blitzillist

Professional RiceR
b18c5 turbo question?

Im gonna end up sounding like a noob anyways but i guess thats how you learn, i heard boosting the b18c5 motor is baaaaaad idea because of its high compression? would turboing this motor be potentially be more likely to blow then lets say a gsr or ls ?
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g3teg97

Super Moderator
On the GS-R and the Type-R motor the compression is higher. You can boost on those engines, but you have to change the pistons to a lower CR. (Compression Ratio).
 

slow_99integra

Stinkin & Drinkin
keeping the stock boost levels is ok for higher compression. itr turbo kits come with less boost than the ls or gsr engine. this is compensating for the higher compression. you can run higher boost, but your tunning needs to be very, very precise. Remeber that Boost Does not Blow an engine. What blows the engine is detonation, this is where the tunning comes into play. along with proper tunning you will also need to retard timing a lot. this works to keep engine temps down as well as reducing the risk of detonation.

lowering the compression is not always needed. EXAMPLE. we will say an engine has 10:1 compression boosting 5psi. whp for this may be around 200. AT THE SAME TIME that engine now lowers its compression to 9.0:1 boosting 10psi. yes the engine is now at a safe level BUT the whp is almost the same. this will decrease the likelthood of detonation, but the hp and tq numbers will be very very close.

if decreasing the CR was a must hondas such as nsx, prelude si, civic si, ctr, rsx, itr, s2k to name a few would not have safe turbo kits or supercharger kits. we would be reading more about blown engines than turbo kits.
 


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TegSox

Super Duper Moderator
slow_99integra said:
itr turbo kits come with less boost than the ls or gsr engine. this is compensating for the higher boost.
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You mean this is compensating for the higher compression, I think.
 

teg9five

a.k.a. crabs!
slow_99integra said:
keeping the stock boost levels is ok for higher compression. itr turbo kits come with less boost than the ls or gsr engine. this is compensating for the higher compression. you can run higher boost, but your tunning needs to be very, very precise. Remeber that Boost Does not Blow an engine. What blows the engine is detonation, this is where the tunning comes into play. along with proper tunning you will also need to retard timing a lot. this works to keep engine temps down as well as reducing the risk of detonation.

lowering the compression is not always needed. EXAMPLE. we will say an engine has 10:1 compression boosting 5psi. whp for this may be around 200. AT THE SAME TIME that engine now lowers its compression to 9.0:1 boosting 10psi. yes the engine is now at a safe level BUT the whp is almost the same. this will decrease the likelthood of detonation, but the hp and tq numbers will be very very close.

if decreasing the CR was a must hondas such as nsx, prelude si, civic si, ctr, rsx, itr, s2k to name a few would not have safe turbo kits or supercharger kits. we would be reading more about blown engines than turbo kits.
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the boy makes a good point :thumbs up lol
well... if anything... i think that pretty much wrapped up this thread 8)
 
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