standard b16b with ITR crank and conrods?


F

fitzer

she no d-turbo heiii
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Dec 8, 2011
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was thinking of replacing my b16b crankshaft and conrods for ITR ones and keeping everything else standard b16b pistons cams etc.. ive read somewhere saying that the b16b cams wont be able for the higher compression that the itr crank and rods will produce? can anybody shed some light on this as i dont really have the money to be getting big fancy cams yet haha
 
Was about to put up a similar thread,thinking of doing the same, from what ive read online, if you use your b16b pistons with b18 crank and rods you will have very high compression, this is ok with standard cams but you will be limited to what aftermarket cams you can use as the clearance between the valves and piston is reduced!
What im wondering is which makes more power b18 pistons and agressive cams or b16b pistons (higher compression) with a mild cam or even just standard b16b cams?
 
JohnOBrien8 said:
Was about to put up a similar thread,thinking of doing the same, from what ive read online, if you use your b16b pistons with b18 crank and rods you will have very high compression, this is ok with standard cams but you will be limited to what aftermarket cams you can use as the clearance between the valves and piston is reduced!
What im wondering is which makes more power b18 pistons and agressive cams or b16b pistons (higher compression) with a mild cam or even just standard b16b cams?
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Im in the same boat p73 pistons with bigger cams or pct pistons.. I messaged aonghus(vtec 6000) about it and he said i qoute
''
fitzer wrote:well, im going about putting an ITR crankshaft and ITR rods into my b16b with the b16b pct pistons for the higher compression and all but was wondering would the standard b16b camshafts be ok with the higher compression? ill be looking for a map off yourself when and if it can be done with standard cams cause your the man to go to ha
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.. just cant really get a straight answer off anybody so thought your the man to ask


Aonghus: Yes they will work fine but it is pointless having all that compression and then using those cams. You will see as much power from using stock b18(p73) pistons and a mild skim to head when using type r cams. ''
 
I always thought that using CTR pistons on ITR crank and rods would be fine provided a good remap is done due to detonation on the pistons :nono:
 
Luger said:
I always thought that using CTR pistons on ITR crank and rods would be fine provided a good remap is done due to detonation on the pistons :nono:
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It would be fine but just restricts what cams you use as the ctr pistons will be coming very close to your valves
 
JohnOBrien8 said:
It would be fine but just restricts what cams you use as the ctr pistons will be coming very close to your valves
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aonghus recommended skunk2 pro2 cams..IF there is just enough V2P clearance to get the most out of the all the compression
 
Think ill stick with b18 pistons rods and crank new set of rings,bearings and headgasket should do me!
 
JohnOBrien8 said:
Think ill stick with b18 pistons rods and crank new set of rings,bearings and headgasket should do me!
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yeah im guaging to that idea too.. just throw a b18cR bottom end onto it, seems like a lotta hassle at the end of the day with the pct pistons after all the research..
 
I stroked my b16b using b18 crank rods an Pistons and made good power with a remap, no need to use the ek9 Pistons,
 
Yonny said:
I stroked my b16b using b18 crank rods an Pistons and made good power with a remap, no need to use the ek9 Pistons,
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The reason for wanting to use the ek9 pistons is that they raise the compression up around 12.5-1.
Only issue is then fitting a cam that can make the most of this because they have more lift/duration they bring the valve much closer to the piston.
If you compare an ek9 piston to a forged variant of similar compression you'll notice the forged one has much deeper valve reliefs than the ek9s. This is to accommodate the use of wilder cams. Think of it as a "budget" high comp build.
 
Yonny said:
I stroked my b16b using b18 crank rods an Pistons and made good power with a remap, no need to use the ek9 Pistons,
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what power did you make yonny? itd just be the same as throwing a b18 block onto the b16b head only difference is the blocks say b16b and b18c yeah? haha
 
jesse888 said:
The reason for wanting to use the ek9 pistons is that they raise the compression up around 12.5-1.
Only issue is then fitting a cam that can make the most of this because they have more lift/duration they bring the valve much closer to the piston.
If you compare an ek9 piston to a forged variant of similar compression you'll notice the forged one has much deeper valve reliefs than the ek9s. This is to accommodate the use of wilder cams. Think of it as a "budget" high comp build.
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yeah, and as vtec6000 said to me there is really no point having all that compression and no cams to go with it, and i dont really have Pro2 cam money at the momento being a student so ill be throwing a b18 block onto it instead just to save a lotta hassle
 
In that case I'd say just sell your B16B and buy a B18. As far as I'm aware the only difference is the slightly more aggressive cam on the B16B, but it's hardly worth the extra effort of changing the block etc. Plus then you know you can safely run stock ecu, which will save you more money still.
 
oifovo said:
In that case I'd say just sell your B16B and buy a B18. As far as I'm aware the only difference is the slightly more aggressive cam on the B16B, but it's hardly worth the extra effort of changing the block etc. Plus then you know you can safely run stock ecu, which will save you more money still.
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ah im gunna just change the block because il be splitting it anyway for the head to be ported and polished and for a spoon headgasket to be put in.. might even throw the b18 internals into the b16b block just to keep her legal so its still ''a 1.6 engine'' on the outside if im arsed haha
 
I have this setup in my engine, b16b with b18c crank and rods with a mild skim, dc sports exhaust mani, and spoon rep exhaust with a high flow cat from reading up cr works out about 12.6, was dynod at 207 by henry Roy... I bought the car with the work done so not sure if that's a typical result but that's what the bit of paper says!!
 
alex4twenty said:
I have this setup in my engine, b16b with b18c crank and rods with a mild skim, dc sports exhaust mani, and spoon rep exhaust with a high flow cat from reading up cr works out about 12.6, was dynod at 207 by henry Roy... I bought the car with the work done so not sure if that's a typical result but that's what the bit of paper says!!
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207bhp is all? if you had proper cams to take advantage of all the compression it would have made alot more, after doing all the research it aint worth it unless you got cams and a proper breathing system. a b18 would make 207bhp
 
See my build thread. I'm going for the wild cams + EK9 pistons route 18C - so I will be checking my P2V in due course!
 
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