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Crankshaft damper for fast road V8 engine?

Sonus
Posts: 208
Joined: Wed Apr 13, 2016 2:19 pm

Crankshaft damper for fast road V8 engine?

Post by Sonus »

What is the general consensus on the crankshaft damper for the Daimler V8 engine?

I see some racers change it for a aftermarket item.

This is Larry Ligas' racer

Image

My fast road engine will be fully balanced. Do I still need the heavy old lump on the front or can i use something lighter?

A.N.Other
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Re: Crankshaft damper for fast road V8 engine?

Post by A.N.Other »

Don’t know about the weight but originals are known to deteriorate and fall apart.
Colin,
I may be slow but I’m rough as well !

Sonus
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Joined: Wed Apr 13, 2016 2:19 pm

Re: Crankshaft damper for fast road V8 engine?

Post by Sonus »

Big Col wrote: Mon Nov 12, 2018 11:00 pm Don’t know about the weight but originals are known to deteriorate and fall apart.
And they are very heavy when you add up the hub, damper and pulley.

Ian Slade
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Re: Crankshaft damper for fast road V8 engine?

Post by Ian Slade »

They have to be heavy to work, though I have heard of hydraulic dampers, whether they would be lighter or suitable in a car engine would need some research.
Last edited by Ian Slade on Thu Nov 15, 2018 4:53 am, edited 1 time in total.
Owner since the 70's, Genghis is slightly to my left.

classiclife
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Re: Crankshaft damper for fast road V8 engine?

Post by classiclife »

Hello,

The damper pictured in the thread looks to be supplied by ATI, an American company.

Looking at their website I can see a listing for Jaguar bit not Daimler, I do not know if the Jaguar one is a suitable fitment in relation to the V8 crankshaft. Perhaps someone will be able to shed some light on that.

http://www.atiracing.com/products/dampe ... jaguar.htm

Regards.

Richard.
1968 Daimler V8-250 Saloon
DLOC East Sussex Branch Secretary
DLOC 2.5L V8 & V8-250 Registrar - https://www.dloc.org.uk/v8-250
DLOC 2024 International Rally - https://www.dloc.org.uk/rally-2024

tjt77
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Re: Crankshaft damper for fast road V8 engine?

Post by tjt77 »

The primary reason why Vintage race engine builders replace the front damper with a modern unit , is 2 fold.. age of the originals, makes them prone to problems effecting reliability, such as disintegration under high rpms ( the rubber bonding becomes hard and can de-laminate with age) which can have catastrophic results.. secondly the ones that are most commonly choose have slightly less rotating mass.(they tend to be silicone filled, rather then rubber bonded) and hence make the balancing process easier.

Sonus
Posts: 208
Joined: Wed Apr 13, 2016 2:19 pm

Re: Crankshaft damper for fast road V8 engine?

Post by Sonus »

classiclife wrote: Wed Nov 14, 2018 8:43 pm Hello,

The damper pictured in the thread looks to be supplied by ATI, an American company.

Looking at their website I can see a listing for Jaguar bit not Daimler, I do not know if the Jaguar one is a suitable fitment in relation to the V8 crankshaft. Perhaps someone will be able to shed some light on that.

http://www.atiracing.com/products/dampe ... jaguar.htm

Regards.

Richard.
I have spoken to both ATI and Larry Ligas. The one on Larry Ligas' car is a Small block ford item. ATI has adviced me to choose the largest item possible.

My concern is that the originals I have all show some cracks in the rubber and I will be spinning the engine to 7000-7500rpm.

I will continue researching :)

classiclife
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Re: Crankshaft damper for fast road V8 engine?

Post by classiclife »

Hello Sonus,

Is there any reason why the damper shown on the Larry Ligas race engine will not be suitable for you ??

Or do I take it he is running a small Ford block, hence the damper shown ??

Did ATI give any indication as what to look for ??

Regards.

Richard.
1968 Daimler V8-250 Saloon
DLOC East Sussex Branch Secretary
DLOC 2.5L V8 & V8-250 Registrar - https://www.dloc.org.uk/v8-250
DLOC 2024 International Rally - https://www.dloc.org.uk/rally-2024

tjt77
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Re: Crankshaft damper for fast road V8 engine?

Post by tjt77 »

reply to classiclife :- the jaguar front damper is an entirely different beast to that used on the Turner V8.. its secured by a tapered ferrule that fits on the crank nose.. and the hole in damper is much larger.. so they are definitely not interchangeable.. however.. quite a few parts made for the small block Ford ( 4.2- 5.0 litre) can be relatively easily adapted to the Turner V8..
Ive come to the realization after decades of disdaining US engine swaps, the Ford small block is a very good and highly practical replacement for the 2 1/2 litre daimler v8.. its fits the space very well in the daimler /jaguar body shell.. costs less then 1/2 the money to acquire and build.. and produces double (or more) the power whilst weighing close to same.. and is extremely durable..as regards tuning for more power..the skys the limit..

Sonus
Posts: 208
Joined: Wed Apr 13, 2016 2:19 pm

Re: Crankshaft damper for fast road V8 engine?

Post by Sonus »

classiclife wrote: Fri Nov 16, 2018 3:35 pm Hello Sonus,

Is there any reason why the damper shown on the Larry Ligas race engine will not be suitable for you ??

Or do I take it he is running a small Ford block, hence the damper shown ??

Did ATI give any indication as what to look for ??

Regards.

Richard.
Not really, Ligas' has modified it slightly to fit the Daimler crankshaft nose. However I do not know the parts number and inaddition his is a race engine and mine will be a fast road engine.

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