So I'm doing a all motor build soon.

Starting point..JDM TypeR swap. I have Skunk2 Pro 2's, Supertech valvesprings, BC retainers. Looking to keep the bottom end stock for now. What I'm looking for answer wise is what headgasket should I run. I know Skunk2 says run 11.6:1 or more comp. Should I run a NEW OEM headgasket and pull a layer or order a Cometic? If Cometic what thickness w/o running into issues.

Also do I need to run aftermarket cam gears or should I be able to run the stock ones? I will be getting tuned when everything is in. Will be tuning on eCtune.

 

A stock headgasket is good. No need to play with it to get more compression.

Spend money on quality bolt-ons.

Yes, you will need a set of aftermarket cam gears. A five bolt pattern is good, six even better.

 

I have seen run people run stock cam gears, but I would reccommend aftermarket cams gears like aem or skunk2 so the tuner you choose can adjust them to your build and from my experiences I have had bad luck with oem head gaskets going out on me when going above 11.5 compression and would reccomend a Cometic, Golden Eagle, etc. head gasket of about .030" which is almost the same size as an oem head gasket.
But see what other people think to and pick the way you want to go.

 

^^^You realize GE headgaskets are OEM.

OP, headgaskets fail due to the following: poor machining or a bad tune. Many, Many people run OEM on very high whp NA and boosted applications.

 

The OEM head gaskets have been used consistently in all of the Bisimoto race cars. We have seen no problems using the OEM gasket with higher compression.

For cam gears the Bisimoto Spec Cam Gear would be your best option.This is the same cam gear design utilized on the World record holding Bisimoto 9 second Honda Insight!

Features:
–Lightweight 6061 aluminum
–Patented serrations: Impossible to slip
–Hard anodized coatings (62 Rockwell)
Unique eye-catching colour (sunset bronze)
–6 degree adjustments, advance and retard
–Balanced assemblies
Race, street and lab tested to over 12,000 rpms

Benefits:
–No slip
–Weight savings
–Long life & reliability
–“Tunability”

Here's a picture of our cam gears from a very satisfied customer of ours

 

Nah! Mar

 

Nah! Mar is right on the cam gears. get five or six bolt ones, dont get those three bolt ones in the pics, they are probally good quality but the five or six bolt patterns are better.

 

Do you have any supporting evidence that the Bisimoto cam gears are not superior to a 5 or 6 bolt pattern?

Maybe you didn't read the post but the Bisimoto Cam gears have a patented serration pattern on them preventing the gear assembly from slipping. They have been tested to 14000 rpms with one bolt and the timing belt broke before the cam gear slipped. This is the cam gear that runs in every Bisimoto car from our Drag Insight to the 700hp d-series powered wagon that is in the Super Street Magazine.

 

nah! i dont really care because you guys mostly deal with some of the best single cams i have ever seen, but i just reccomend five or six bolt patterns to be sure a bolt don't slip. do you guys have cam gears for a K series. I would like to try them out and how mych they run?

 

how much are those?

 

yes with pro2's you should aim for 12:1 but 11.6:1 is the lowest recommended, and why not get S2 valve train instead of BC and Supertec? I have full s2 valve train and it runs beautiful.

 

Thats a bases.. you dont have to have that compresion ratio to run those cams and make good power.. you just wont utlize them, like they should be used..



enlighten me what –Patented serrations: Impossible to slip is.. and how 3bolts dont slip..

 

Currently, there is not a cam gear offered for the k-series but we do have one in development.

The serrations that are on the Bisimoto Spec cam gears are superior to any 5 or 6 bolt set-up. A design that still has the ability to slip is eventually going to slip. The Bisimoto Cam Gear does not have the ability to slip so slippage is not something to worry about

 

true, but isn't there a fuel economy benefit with a lower compression? There is two sides to the coin i think

 

what kind of all motor build are you doing, a street build or race, I know the Pro2's are'nt an intended street cam, but some people use the as such. with my stree build i essetially did a full head job, and got 55hp out of it with ony a stage 2 port/polish

 

Good Question
Its alittle hard to see in this picture but around each bolt "hole" is a block of serrations that's is present on all 3 pieces of the cam gear. These interlock preventing slip. The design also does not allow tooth to tooth contact. The cam gear assembly will not bolt together if the 3 pieces are not aligned correctly.As stated before we have tested this up to 14000 rpm with ONE bolt in and the timing belt before the cam gear slipped.


The Bisimoto cam gears are a 3-piece design,this picture is missing the rear piece

 

Awsome! Well I would love to try them out on my k24 build

 

when is the expected do date for these cams to come out for the K series?

 

Street car, will be at the track once or so a week. I was wanting to do a oem headgasket and maybe pull a layer to bump the CR some.

 

Bump need some input guys! Thanks HT!

 

Can you share with us how this was accomplished. That is a very large increase with a port/polish.

 

That's a bit hard to believe if the only change was porting the head - are you sure nothing else changed between the dyno runs?

 

shucks... i think i jus caught a whiff of some bull$****

 

I see, and understand. I might go with bisi, on my pro2's then.. i can see how its limited movement.. I'm assuming you made the holes big enough to allow the adjustments on the cam gears, but not go go too far.. its looks safe and well designed.

 

To run pro2's you have to go with adjustable gears.
There's a different way to degree them and then there's a different way to set each cam..

The general rule of thumb for the pro2's is +1 or +2 on the intake and +4 - +6 on the exhaust.. for the timing to be right, IF you degree the cams in properly.