Is the Titan a Hemi ?

RockyMtnMechanic · 09-21-2006, 09:06 PM

The Titan looks like the spark plugs are centered in the valve covers, is it a hemispherical combustion chamber?

**konigfritz** · 09-21-2006, 09:13 PM

Quote:

Originally Posted by RockyMtnMechanic

The Titan looks like the spark plugs are centered in the valve covers, is it a hemispherical combustion chamber?

Nope, several cars have had center sparkplugs for better combustion. Unlike "hemis" standard heads are easier to service, cheaper to make and can be modded in a much more efficient manner.

IMADOGMAN · 09-22-2006, 06:41 AM

Titan has a Pent-roof combustion chamber.
pent-roof:
A combustion chamber whose upper surface resembles a shallow peaked roof. Usually used with four valves per cylinder.

06titancrewse · 09-22-2006, 01:22 PM

If it did I would never tell anybody about it. I dont want to have anything in common with a dodge.

TitanBlue · 09-22-2006, 03:02 PM

Another thread a week ago listed "howthingswork.com" as having a short but clear explaination of hemi vs penta design. "how a hemi works" I think was the title. Good reading. Yes guys, not Master's Degree level, but good enough for us.

Checkit out.

Yellomantis · 09-22-2006, 03:26 PM

is the engine an interference application?

TitanBlue · 09-22-2006, 03:41 PM

Quote:

Originally Posted by Yellomantis

is the engine an interference application?

You made me think a couple seconds Yellowmantis. I don't know.

FYI: Interference application means the valves will hit the piston if the timing chain breaks and you lose synchronization of the open/close action of the valves. JIC some of us forgot.

Yellomantis · 09-22-2006, 08:44 PM

The reason I ask is because I have had a few engine failures due to timing belts breaking and chains stretching to the point of valve vs piston collisions. Are we supposed to replace the timing chain at any time in the engine's life span?

MDJamesD · 09-22-2006, 08:47 PM

there is no need to replace the timing chain. It comes with 2 hydraulic tensioners, and if they can't keep it tight, then I don't know what will

1bigtexastitan · 09-23-2006, 12:36 AM

I have a friend that works at dodge and he told me that the newer hemi's aren't even a real hemi. Go figure.

tonyliz1321 · 09-23-2006, 10:05 AM

yes if you look up pics on google they are not true hemis they are not even a semi-hemi

**konigfritz** · 09-23-2006, 10:19 AM

Now that's funny!!! Guess the mexican plant couldn't figure out how to make them.

**Blackbeauty** · 09-23-2006, 10:36 AM

From Wikipedia:

The modern Hemi is not really a Hemi at all - it has a polyspherical combustion chamber similar to that in many other modern engines. A true Hemi head was considered in the design phase, but it was rejected and only the near-perpendicular valve arrangement remains. The Hemi replaced Chrysler's large LA family of engines, particularly the Magnum 5.9, in the early 2000s.

For more:

http://en.wikipedia.org/wiki/Chrysler_Hemi_engine

**Carbeaux** · 09-23-2006, 10:51 AM

Quote:

Originally Posted by Blackbeauty

From Wikipedia:

The modern Hemi is not really a Hemi at all - it has a polyspherical combustion chamber similar to that in many other modern engines. A true Hemi head was considered in the design phase, but it was rejected and only the near-perpendicular valve arrangement remains. The Hemi replaced Chrysler's large LA family of engines, particularly the Magnum 5.9, in the early 2000s.

For more:

http://en.wikipedia.org/wiki/Chrysler_Hemi_engine

This brings a whole new context to the question "Does that thing have a Hemi"? LOL

RockyMtnMechanic · 09-24-2006, 07:18 PM

So if somebody pulls up beside me and asks if that thing has a Pent-roof?
I'll tell him F%&K YAH !!

THX's for the info.