Vertex Auto Rebuild 996 3.4L Rebuilt Engine
08-03-2017, 06:40 AM
#1
Racer
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Vertex Auto Rebuild 996 3.4L Rebuilt Engine
Has anyone used the Vertex Auto rebuilt 996 3.4L engine? I’m looking for feedback on service received, reliability, build quality, and performance. Here is a link to their site for the rebuilt engine.
https://www.vertexauto.com/porsche-r...1-p-12048.aspx
https://www.vertexauto.com/porsche-r...1-p-12048.aspx
08-03-2017, 12:59 PM
#4
Rennlist Member
I seem to remember reading short posts from a few infrequent visitors to this forum who have Vertex rebuilds who were happy with the motor they received. Hopefully some will speak up to this thread and we'll get some first hand feedback.
In my previous C2 cab I used the EPS IMS "eternal" roller bearing, which vertex uses in all of their engine builds. I put 6k miles on it and then decided to buy a coupe instead. I will use that bearing again.
In my previous C2 cab I used the EPS IMS "eternal" roller bearing, which vertex uses in all of their engine builds. I put 6k miles on it and then decided to buy a coupe instead. I will use that bearing again.
08-03-2017, 01:34 PM
#5
Drifting
iirc there was a Thread of a Forum Member having a Vertex engine failure while driving it home after having Vertex install one of their rebuilt engines in his car.
The Vertex IMSB is just a roller IMS bearing. When first introduced it was inadequate.No thrust control.After some withering criticism here, it was quietly modified to include some Thrust control.All in Seearch.
An alternative for the engine and the IMSB here:
http://rndengines.com/
Ask Martin - he would have had an interesting comment !
The Vertex IMSB is just a roller IMS bearing. When first introduced it was inadequate.No thrust control.After some withering criticism here, it was quietly modified to include some Thrust control.All in Seearch.
An alternative for the engine and the IMSB here:
http://rndengines.com/
Ask Martin - he would have had an interesting comment !
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08-03-2017, 06:38 PM
#8
Burning Brakes
I'm curious to understand what sleeves they use in the cylinders, they state they use steel or iron sleeves but they don't show the actual sleeves. My understanding (might be wrong) is that the thin sleeves that essentially pressfit into the milled out aluminum sleeves in the m96 block are poor. The reason being there is no good way to anchor them apart from adding a small lip at the top and using friction.
The other problem is the AL to sleeve interface is not good for expansion during heat cycles so over time causes problems.
The better steel sleeves are entire liners, they kind of look like steel metzger sleeves, the m96 has its cylinders completely milled away. The steel liners are 'wet'
The wet liners should have better cylinder head sealing, retention etc
The other problem is the AL to sleeve interface is not good for expansion during heat cycles so over time causes problems.
The better steel sleeves are entire liners, they kind of look like steel metzger sleeves, the m96 has its cylinders completely milled away. The steel liners are 'wet'
The wet liners should have better cylinder head sealing, retention etc
08-03-2017, 06:52 PM
#9
My interpretation was that it's an a la carte build. 8.5k to tear down & refit with the new items listed. But re-sleeving is extra. Maybe I'm just experiencing haste related comprehension fail...
08-03-2017, 07:13 PM
#10
I'd like to understand this better...is there a good source for this?
I'm curious to understand what sleeves they use in the cylinders, they state they use steel or iron sleeves but they don't show the actual sleeves. My understanding (might be wrong) is that the thin sleeves that essentially pressfit into the milled out aluminum sleeves in the m96 block are poor. The reason being there is no good way to anchor them apart from adding a small lip at the top and using friction.
The other problem is the AL to sleeve interface is not good for expansion during heat cycles so over time causes problems.
The better steel sleeves are entire liners, they kind of look like steel metzger sleeves, the m96 has its cylinders completely milled away. The steel liners are 'wet'
The wet liners should have better cylinder head sealing, retention etc
The other problem is the AL to sleeve interface is not good for expansion during heat cycles so over time causes problems.
The better steel sleeves are entire liners, they kind of look like steel metzger sleeves, the m96 has its cylinders completely milled away. The steel liners are 'wet'
The wet liners should have better cylinder head sealing, retention etc
08-03-2017, 09:51 PM
#13
08-03-2017, 10:16 PM
#14
Burning Brakes
Maybe call them? my engine (touch wood) is operating perfectly right now, so I'm not in the market right at this moment, be nice to know though.
08-04-2017, 10:20 AM
#15
Pro
When I was looking for rebuild options I did call them, (have since gone with local contact and used LN Nickies). Based on my conversation with them I believe they build to order and would asses the engine you sent in and rebuild.
There are mixed reviews, seems like good value, especially as I have spent much more than their quoted rebuild price on parts alone (but then the LN Nickies are expensive).
I believe there may be comprises and steel sleeves in an aluminium block may also cause issues as they are thermally dissimilar.
There are mixed reviews, seems like good value, especially as I have spent much more than their quoted rebuild price on parts alone (but then the LN Nickies are expensive).
I believe there may be comprises and steel sleeves in an aluminium block may also cause issues as they are thermally dissimilar.