200whp b16b, cams?


Nyborg Garage said:
I guess you are "championship white's" brother? If not there are three people on this forum building B16s with Pro2s and jenveys, plus another one (from dubai) building a B16B with Pro2s.

The Jenveys has been on the car for one full season, so that's no issue. Since it's not my car I don't know how these issues where fixed.

But thanks alot for the tips about the rocker assy.
Can you tell me more about this? Was the wear noticeable when you looked at it?
I just did a B18C with Pro2's, and after timing the engine the cam gear-timing was dead on compared to what others have experienced on same engine/cam, and also well within the safe zone. But the valves opened 10-20 degrees earlier, and closed 10-20 degrees later than the pro2 specs (still maximum lift was dead on).
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Yes, that's my brother. And what you described was the same for us, it's because of the rockers.
 
Nyborg Garage said:
I just did a B18C with Pro2's, and after timing the engine the cam gear-timing was dead on compared to what others have experienced on same engine/cam, and also well within the safe zone. But the valves opened 10-20 degrees earlier, and closed 10-20 degrees later than the pro2 specs (still maximum lift was dead on).
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yep thats what we found first time round. Basically we found that the good rockers had a slight wear square on the middle of each of the flat surface in contact with the cam. On the worn gear this patch was much larger and extended from the middle to the end of the flat area making more of a retangle shape. This may be the problem especially if the engine previously had more agressive cams in than standard.

If i remember ill try and take a pic of the two as my description aint that great :))
 
J Male said:
yep thats what we found first time round. Basically we found that the good rockers had a slight wear square on the middle of each of the flat surface in contact with the cam. On the worn gear this patch was much larger and extended from the middle to the end of the flat area making more of a retangle shape. This may be the problem especially if the engine previously had more agressive cams in than standard.

If i remember ill try and take a pic of the two as my description aint that great :))
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Hmm, that sounds about right.. Will have to check the rockers, thanks for the heads up! :D

The b18c was a stock JDM engine with about 60.000miles (100.000km) on it.
 
Im running a Toda header. Super clearance and good performance...
Driving a stock B18C-R, Hondata S300, Mugen TL, Mugen airintake and kept up with a K20 swapped EM2 today. So im pretty happy with the setup :)
 
Yes, I would really like to test the Toda header, it's a good quality header with good ground clearance. Although i doubt it would make as much HP as the hytec og rmf replicas. Still i will try an get one to test (i know many here i Norway who run them).

One header I would love to test is the RMF race header, but i don't have that much money to spend on high end headers :p
 
Here are som pics of the rockers from this B16A soon to be rallycross engine. Think i might need new ones..

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I think some good headwork and cams will see you that 200whp. Flat face valves will add to the compression slightly. Depending on the valve lift and clearance when piston is @tdc you may need to have the valve relief pockets milled deeper and wider. best to clay the engine if using very aggressive cams. If you were to follow the omniman setup then I believe you should see over 200whp as blinx said he made those figures on 91octane fuel I assume you will be using higher grade fuel.
 
Vtec6000 said:
I think some good headwork and cams will see you that 200whp. Flat face valves will add to the compression slightly. Depending on the valve lift and clearance when piston is @tdc you may need to have the valve relief pockets milled deeper and wider. best to clay the engine if using very aggressive cams. If you were to follow the omniman setup then I believe you should see over 200whp as blinx said he made those figures on 91octane fuel I assume you will be using higher grade fuel.
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Yes, 200whp should not be a problem, although you never know with all these different dyno results and such.

The goal really is not 200whp, the goal is get as much HP as possible within the budget.

A always clay for valve to valve relief clearance, I also check valve to valve, and Piston to valve clearance at overlap with all camgear settings, and different crank angles.

If the combustion chamber is being welded i will probably get enough compression with the PCT pistons, so if the valves and the valve guides are in good shape they will not be changed.
 
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