Tomei EXPREME Exhaust Manifold Ver.1 causes oil burning?
#1
05-15-2023, 03:01 AM
Tomei EXPREME Exhaust Manifold Ver.1 causes oil burning?
Hi all!
Nissan Skyline PV 35 VQ35DE 6-MT 2005 (non REV-UP, JDM motor, right-handed)
Oil 5w-30
Here is my introduction post and car info:
https://g35driver.com/forums/new-mem...-pv35-6mt.html
Copy-paste my question from the introduction post below.
Guys, i would like to ask you one thing.
In 2008, Tomei announced Expreme Manifold Ver.2. But there is almost none info about Ver.1 in Internet.
My problem is, that after installation of that Tomei Expreme Manifold Ver.1 VQ35DE + Custom Cats with perforated diffuser outer diameter 100 mm and length 200mm, internal diameter 60mm length 200mm, cat pipes 60mm (same as manifold outer pipes diameter 60) , I faced a big oil consumption, approx. 1000 ml/100 km (1.05 quart / 65 miles), right after the installation (in a few hours).
I decided that the problem was with the engine - and i did engine overhaul (changed piston rings, valve oil seals, crankshaft bearings, connecting rod bearings, engine gaskets).
Oil consuption now remains on 650 ml/1000 km (0,68 quart / 621 miles).
I assume, that this manifold causes missing counterpressure in engine and leads to the oil being "sucked out like with pump" of the engine. Besides, my friend says that the oxygen sensor installation place in this manifold was done bad, and ECU incorrectly regulates the fuel supply, as it receives data from only one cylinder on each side. He also told me that in American segment the "workaround" solution for this oxygen sensor problem is to plug the oxygen placehole in manifold, and install the sensor in upper part of the cat pipes (near the connection to manifold).
Does anyone knows anything about same cases?
Thank you!
P.S. PCV checked, seems to bee OK. Oil catch can system is not installed, I'm not sure if this really works as in my case, so in general. In touch with @Mr_Saikou last few days about buying/shipping it to Russia. But I have still have some doubts about the efficiency of the system, cannot find real confirmation yet, that the cost of the system will be justified by the efficiency.
I will upload to youtube, and link here a videos and pics related to the problem, if needed.
Nissan Skyline PV 35 VQ35DE 6-MT 2005 (non REV-UP, JDM motor, right-handed)
Oil 5w-30
Here is my introduction post and car info:
https://g35driver.com/forums/new-mem...-pv35-6mt.html
Copy-paste my question from the introduction post below.
Guys, i would like to ask you one thing.
In 2008, Tomei announced Expreme Manifold Ver.2. But there is almost none info about Ver.1 in Internet.
My problem is, that after installation of that Tomei Expreme Manifold Ver.1 VQ35DE + Custom Cats with perforated diffuser outer diameter 100 mm and length 200mm, internal diameter 60mm length 200mm, cat pipes 60mm (same as manifold outer pipes diameter 60) , I faced a big oil consumption, approx. 1000 ml/100 km (1.05 quart / 65 miles), right after the installation (in a few hours).
I decided that the problem was with the engine - and i did engine overhaul (changed piston rings, valve oil seals, crankshaft bearings, connecting rod bearings, engine gaskets).
Oil consuption now remains on 650 ml/1000 km (0,68 quart / 621 miles).
I assume, that this manifold causes missing counterpressure in engine and leads to the oil being "sucked out like with pump" of the engine. Besides, my friend says that the oxygen sensor installation place in this manifold was done bad, and ECU incorrectly regulates the fuel supply, as it receives data from only one cylinder on each side. He also told me that in American segment the "workaround" solution for this oxygen sensor problem is to plug the oxygen placehole in manifold, and install the sensor in upper part of the cat pipes (near the connection to manifold).
Does anyone knows anything about same cases?
Thank you!
P.S. PCV checked, seems to bee OK. Oil catch can system is not installed, I'm not sure if this really works as in my case, so in general. In touch with @Mr_Saikou last few days about buying/shipping it to Russia. But I have still have some doubts about the efficiency of the system, cannot find real confirmation yet, that the cost of the system will be justified by the efficiency.
I will upload to youtube, and link here a videos and pics related to the problem, if needed.
Last edited by gbogomolov001; 06-03-2023 at 01:25 PM.
#2
06-03-2023, 01:24 PM
#3
07-10-2023, 02:53 PM
Registered User
Could be an internal sealing issue. I've seen issues with small block Chevy engines have issues with how the manifold seals to the heads. If there's a gasket issue or maybe the heads being resurfaced changed the angle of how the heads mate to the manifold it can suck in oil from the lifter valley. Pull the plugs, see if one or two are fouling, issue would be related.
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