TR7 & TR8 Mailing List

TR7 and TR8 Mailing List Messages => Wedge List => Topic started by: Major Tom on February 10, 2019, 12:43:26 PM

Title: Replace TR8 Lifters? GO WITH ROLLERS.
Post by: Major Tom on February 10, 2019, 12:43:26 PM
Yes, been there done that.





Multiple flat cams, multiple lifters pitting in under 1000 miles.

Finally after 4 sets of lifters and 3 cams I went for the roller

lifters, about $150 on ebay, don't regret it. As I recall the

pushrods are not reusable, but can also be purchased. it has to do

with the total length of the stem, cam to rocker. I wrote it up and

may still have it somewhere.



IIRC I measured the diameter and length and found some Chebby parts

that worked just dandy. the price difference between standard

hydraulic and rollers was under $100 extra, for the whole job.



MT









At 05:15 AM 2/10/2019, you wrote:

>One cold starts the car will have a short period of ticking which

>sounds like the lifters.

>

>Nothing serious, but I can hear it.

>

>

>

>The top end of the engine is out as I have a valley pan gasket leak

>I intend to fix.

>

>I am staring at the lifters now and have a full set of new ones

>sitting on the bench.

>

>

>

>Do these things fail?

>

>Would it be a good idea to swap them out?

>

>If I do, do these need to be primed or prepped in some way?

>

>

>

>Thanks!

>

>

>

>Randy Tess

>

>19980 FI TR8

>

>

>--

>.

>Archives provided courtesy  http://www.triumphwedgeowners.org

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Title: Re: Replace TR8 Lifters? GO WITH ROLLERS.
Post by: Mark Elbers on February 11, 2019, 10:50:45 AM
Major Tom,

  i think Ibm not the only one who would be interested in details of your

Chevy roller lifter conversion.  I understand a side benefit is that more

radical cam profiles can also be used.  Do you recall which cam you went

with.



In the past price has been a major deterrent for roller rockers,  perhaps

lifters are different???  Whenever Ibve looked these parts up for Rover or

Buick V8bs the various specialists seem to charge a premium.



Regards



Mark







Sent from my mobile



>
Title: Re: Replace TR8 Lifters? GO WITH ROLLERS.
Post by: Alan Yeo on February 12, 2019, 07:36:58 AM
I was always led to believe that you needed different cam profiles for

roller lifters as they don't like the v short duration at full lift that

is fairly typical of a flat follower cam. i.e because of the tiny

contact patch that a roller has with the cam a more rounded cam tip

profile was desirable.



alan
Title: Re: Replace TR8 Lifters? GO WITH ROLLERS.
Post by: Zack on February 13, 2019, 09:01:04 AM
Ibve been Running rollers from the wedgeshop in my coupe for a few years

now, believe theybve installed a few dozen of their kits with great

results....

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Title: Re: Replace TR8 Lifters? GO WITH ROLLERS.
Post by: Zack on February 13, 2019, 09:01:05 AM
Ibve been Running rollers from the wedgeshop in my coupe for a few years

now, believe theybve installed a few dozen of their kits with great

results....

--

.

Archives provided courtesy  http://www.triumphwedgeowners.org