L5 Turbo, L9 Turbo and now - L What Turbo????

In my earlier post http://kp-gasket.blogspot.com/2010/09/another-type-of-jb-det-rocker-cover.html which I found interestingly my stock of L5 and L9 valve cover gasket can't fix into this rocker cover.

This engine actually is from the same family of Daihatsu JB series 4 cylinders engine which all of them share the same cylinder head gasket.


At last I have the rocler cover gasket in my stock, but what should we call it? L5, L9 or L whatever, but owner need to be clear of which type of gasket they really need it to avoid wrong item been ordered.

Old Hyundai Sonata Rocker Cover Gasket

In the early day, most of the Korean car model is using the Japan made engine for their vehicle, like Hyundai is mostly have some related engine with Mitsubishi and Kia have the engine of Mazda.

But sometime, though the engine is derive from the Japan technologies, it is noted that the Korean like to do some minor changes to make their parts is not really same for those Japan item, like they might made the rocker cover with more wider grove hence you need a thicker gasket.

One of the example is the very old type of Hyundai Sonata, which the engine is similar for those Mitsubishi G62B engine for those YD model, but they just want to modified the rocker cover as such their gasket have 8 holes on it, whereby the Japan model type don't have this 8 holes.

Mitsubishi Colt 1.5 4A91 MIVEC Engine

Mitsubishi Colt 1.5 Z23AXSLHR is one of the new Mitsubishi model introduce to Malaysia market after the restriction of Mitusbishi to import their passenger car to Malaysia is lift since the Mitsubishi and Proton had stop their tie.


This new Colt had come with an engine which local market may not so familliar with it, its 1.5-litre MIVEC engine produce 77kw(105PS)/6,000rpm and 141N-m(14.4kg-m)/4,000rpm.

Kancil L5 Turbo Housing Gasket

All the while, I thought thet Kancil L5 turbo housing gasket is same with those on Kancil L9 as their engine is from JB-series, though it difference by JB-DET and JB-JL. And now the question is this turbo housing can be interchangeable between L5 and L9 engine or not?

Mitsubishi Air Trek DOHC Engine Gasket

At a glance, this Mitsubishi Air Trek (The word of Air Trek should be separated or is combine as Airtrek?) DOHC engine code is noted as 4G63, but it seem the design of their engine have some minor difference when compare to those VR4 or Evolotion series use of 4G63.

The rocker cover gasket and cylinder head gasket itself is difference to those VR4, but the interesting item is we can see the turbo housing gasket, which they common call TDO5 for those EVO series, have quite a lot of difference, the gasket size on this turbo housing is bigger, is that the Turbo power from this engine is higher than those in EVO series?

Nissan Urvan 3.0 ZD30DDTi Flywheel Oil Seal

In my past article, I did touch about the flywheel oil seal which come with the metal housing together, which is on Daihatsu JB-DET engine and Nissan VQseries of engine.

And normally this flywheel oil seal is not in the content of overhaul set gasket which many of them taking granted that this oil seal should be included.

And the most recent case is one of my customer buying the Nissan ZD30DDTi engine overhaul set gasket, which is using on Nissan new Urvan 3.0 diesel in Malaysia (In Japan it use on Safari and Terrano 3.0 for Y61 and R50), and they found the flywheel oil seal is not included in set.

After doing some sourcing, we able to buy the oil seal which as shown on the photo above, for a glance of thought, should this oil seal design as like this or should it design so that the oil seal can be change without replacing the housing? What is the rational on this oil seal design?

Nissan QG18DD Engine

Nissan had introduce the Sentra N16 model in Malaysia for quite a few years, with the 3 types of engine QG15DE, QG16DE and QG18DE, which is 1,497cc, 1,596cc and 1,769cc respectively.

As this consider the Nissan QG series of engine is come from a same family, their engine gasket will have a lot of similarity with a minor difference on difference engine.

For cylinder head gasket, it is very common all of them is the same design but with only vary on the gasket bore diameter depend on the engine capacity on their engine piston diameter.

For rocker cover gasket, it is normally only have 2 types of it which QG15DE using their own type and QG16DE and QG18DE share the same rocker cover gasket, please note that this statement is for Malaysia local market which it may vary on other countries.

But as usual, there are still a chance for those engine imported into Malaysia which initially may not intended to be in local market, and this may apply to the QG18DD engine.

What is the difference in QG18DD engine? The info of their performance difference is easily can be find if you do your surfing homework good enough, one thing still need to be confirm is if the rocker cover gasket is difference from those QG18DE engine? Which I heard may be is only difference one screw hole on the gasket.