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What is the difference between the turbo and non turbo motor

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What is the difference between the turbo and non turbo motor

Postby Bruce e » Mon May 28, 2018 10:32 am

How do they lower the compression ratio. Different pistons or rods or head or gasket


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Re: What is the difference between the turbo and non turbo m

Postby ceurieusneus » Tue May 29, 2018 7:35 am

In the question, there is no specification about the type of engine...

Differences i noticed between turbo and non turbo diesel, (ships) engines
Not all where found on the same engine and I am sure I have forgotten some of them already :mrgreen:
Turbo, compression, camshaft, pistons, inlet and outlet collector, bigger diameter exhaust, different material of the bearings crankshaft, bigger oil pump, air cooler, oil cooler, piston cooling (oil).

Lowering the compression ratio, on the same motor block, (turbo) was done by the different pistons.
The turbo pistons had a different top that made it possible for an extra overlap...in and outlet valve, together open for a longer period.
This overlap was made to cool the top of the pistons.

I hope, I still have it all a bit wright, ships engines are now 25 years in the past and the brains are already a bit fading. :mrgreen:

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Re: What is the difference between the turbo and non turbo m

Postby Bruce e » Tue May 29, 2018 8:50 am

Sorry I was referring to the 1995 to1999 engine. I have 3 non turbo 2.5 s and have just bought 2 2.5 turbo l also have 3 old 2.4s

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Re: What is the difference between the turbo and non turbo m

Postby MinorMatt » Tue May 29, 2018 3:21 pm

There are minor differences in pistons, but its the head that really drops the C/R
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Re: What is the difference between the turbo and non turbo m

Postby cherniy_chack » Tue May 29, 2018 5:29 pm

The main differences in turbo and non-turbo are 2.5 D:
1-larger volume of the combustion chamber in a turbo-piston and its other configuration;
2-another camshaft, a long expansion phase and a shortened exhaust phase, a long intake phase;
3-small recesses between the valves in the head of the turbo motor unit
4-turbo-nozzles shorter by 2 mm-to the depth of the notch in the head of the block.
Everything else is external.
General moments of turbo and non-turbo engines: cooling of the pistons with a stream of oil through the nozzles on 1-4 bodies of the main bearings of the crankshaft, oil pumps of equal capacity, the block has a drill for supplying oil to the turbocharger. In the non-turbo it is muffled by a threaded plug
From outer: other inlet and outlet manifolds, with the nozzle discharging tray from the turbocharger oil, other high-pressure fuel pumps are possible additional oil cooler and air cooler.
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Re: What is the difference between the turbo and non turbo m

Postby F111ORY » Tue May 29, 2018 6:57 pm

Basically not worth worrying about. Loads of people have put a turbo on a standard N/A Di and they run just fine for thousands of miles!
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Re: What is the difference between the turbo and non turbo m

Postby davetheshrew » Tue May 29, 2018 9:09 pm

done the conversion on mine recently, well worth it, I run a fairly conservative 0.7 bar boost, livened the van up and can cruise up any hill in 4th.
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Re: What is the difference between the turbo and non turbo m

Postby cherniy_chack » Wed May 30, 2018 2:10 pm

I installed a new turbocharger with standard turbo collectors two years ago, six months ago Bosch VE turbojet No. 154 was installed.
On the instrument panel, a pressure gauge was installed to monitor the boost pressure.
The maximum boost pressure is 1 bar.
My Kiev is on seven hills, on any of the hills I'm on the 4th gear.
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Re: What is the difference between the turbo and non turbo m

Postby Bruce e » Wed May 30, 2018 10:54 pm

Thanks for the great reply. I have had mk1 and mk2 transits. Can anyone tell me what year's the mk3 4 5 and 6 were built

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Re: What is the difference between the turbo and non turbo m

Postby Stule » Thu May 31, 2018 9:00 am

MK3 1986-1991
MK4 1992-1994
MK5 1995-2000
MK6 2001-2006

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Re: What is the difference between the turbo and non turbo m

Postby organictransit » Fri Nov 09, 2018 10:50 pm

Anyone got a link to a step by step quide of doing a turbo conversion please... have a 2.5 di with Lucas pump and want to do turbo conversion but want to have the know how first and a link to someone’s would really help and much appreciated
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Re: What is the difference between the turbo and non turbo m

Postby Jim Archer » Wed Nov 14, 2018 7:35 pm

Have you tried the search function?

There are numerous threads on the subject.

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Re: What is the difference between the turbo and non turbo m

Postby gotgcoalman » Wed Nov 14, 2018 9:56 pm

bin the lucas pump and put a bosch on first.
wind up the fueling and see if you need to turbo it.
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Re: What is the difference between the turbo and non turbo m

Postby Hellblazzer » Sun Nov 25, 2018 10:23 pm

cherniy_chack wrote:2-another camshaft, a long expansion phase and a shortened exhaust phase, a long intake phase;
3-small recesses between the valves in the head of the turbo motor unit
(...)


So, when installing a turbo on an originally NA engine, should I tune the valves to try and mimic that? Like, getting the intake valve gap closer to the minimum spec and the exhaust valve gap closer to the maximum gap spec?
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Re: What is the difference between the turbo and non turbo m

Postby Hondekop » Mon Nov 26, 2018 2:43 pm

"So, when installing a turbo on an originally NA engine, should I tune the valves to try and mimic that? Like, getting the intake valve gap closer to the minimum spec and the exhaust valve gap closer to the maximum gap spec?"

No, you should read and understand what F111ORY said before:
"Basically not worth worrying about. Loads of people have put a turbo on a standard N/A Di and they run just fine for thousands of miles!"

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