Wade 872a Camshafts. Bigport 16valve running MAP.

[Raleigh]

Hi all, I have done some searches re running the wade 872a Camshafts ( 267 Degree Actual duration) in a JDM spec Bigport 16 valve with TVIS running a MAP sensor but cannot confirm if The wade 872a will run properly with the Std MAP Ecu. Do the 872a's have enough Vac to operate the TVIS system? I have found various posts with good results running these cams in Small ports and a AFM Ecu.

Most agree that the 2202-RT093 HKS 256 8.0mm lift cams will work with a MAP Ecu and TVIS. Reading the HKS cam cards I have show the 256 cams actually have way more duration than "256". Example: inlet opens 20 BTDC and closes 69 ATDC. Thats 269 deg.

The exhaust HKS 256 duration is even larger.Example: Exhast opens 62 BBDC and closes 38 ATDC. Thats 280 deg.
From this info 256 is only a model/part number and has nothing to do with camshaft duration.256 is not even the duation at 1mm lift. (218 deg at 1mm).

Let the constructive criticism flow....

[Jimmee1990]

I'm running Clive's slightly modified version with more duration of the Wade's grind in my bigport running map, a little trial and error playing with the cam gears and it loves it. Interestingly enough I'm getting better fuel economy at the moment too which is a bonus.

[Raleigh]

Hi James,
What are the specs? (opening /closing degree's) Part no etc? Does the TVIS still Work?
Regards,Greg.

[Jimmee1990]

I'll see if I can find the cam card and scan it in, TVIS still works fine. In my car fuel consumption has even slightly improved.

[Hen may possibly be a nut]

A friend once ran some 272 degree cams in his stock (I think MAP) bigport, just because he had them lying around. They worked and gave a performance improvement. I know no more than that though.

[timbo]

I'm running TRD 272's in my smallport with stock JDM ecu. Pure awesomeness, idle is a bit rough and rubbish when cold but who cares. It has higher compression than normal and needs a little advancement with ignition timing.