Matt's L67 Calais ***Bent pushrod, broken valve spring*** - Page 4 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-25-2007, 01:16 PM   #31
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Puuurdy santa seems to be a few months early
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Old 09-28-2007, 08:29 AM   #32
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Here is a photo of the Yella Terra billet fuel rails:

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And my new billet snout that arrived today with 67mm pulley. The 67mm is temporary until my 64mm is in stock.

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Old 09-28-2007, 08:36 AM   #33
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Quote:
Originally Posted by DarkShadow
So THATS what the Cadillac Catera came from...........

I am almost positive the Catera is an Opel design.

RWD L67.... man that must be a fun a$$ car to drive. It looks to me that the Aussies have better parts for our cars, I vote we move the Bonneville Club down under
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Old 09-28-2007, 02:33 PM   #34
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Quote:
I am almost positive the Catera is an Opel design.
It is opel.

I know the toliets flush counter clockwise down there. Does that hold true for the superchargers too
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Old 10-10-2007, 02:41 AM   #35
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They are good fun to drive... and yeah superchargers still spin the right way... mines just not as fast as it should be yet Had a lttle meet up (only a few cars) on the weekend. I was the only one that didn't wash my car... or have an Intercooler set up... dammit.

From left to right

VS Commodore - Yella Terra W2A Intercooled, Cam and Headwork, 6 Speed Manual plus more
VT Calais - Mine
VT SS Commodore - Ported supercharger, F.I.T. Air to Air Intercooler , HR Rockers plus more
VS Executive - F.I.T. Air to Air Intercooler, HR Rockers

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Old 11-02-2007, 12:40 PM   #36
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The other night I was cruising home from work at 11:30 and my car started to miss really badly. I couldn't hear any sign of anything mechanical going wrong. I organised a tow home and then the next night to a mates place. We tried all the obvious fixes and found nothing until we pulled the rocker covers off and checked the rockers, this is what we found:

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The car was running FIT reworked 1.97:1 ratio rockers. There have now been a few cases of these rockers and bent pushrods. The ratio ona nother set has been measured and was apparently found to vary significantly.

We checked for obvious damage to the lifters, valves as best we could and compression tested and it seemed okay. We replaced the valve spring and re-installed standard GM 1.65:1 ratio rockers and new pushrods and the Calais feels like it is running quite well... hoping to have my new heads ready in the next few weeks so we can inspect further... argh.
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Old 11-02-2007, 01:18 PM   #37
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Oh man, Ouch

good luck, hope you get things going again soon!
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Old 11-02-2007, 01:20 PM   #38
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Wow, that was quite a high ratio for those rockers. I couldn't find in the post that you had replaced the bent pushrods. Are those doing well, then?
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Old 11-02-2007, 01:31 PM   #39
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Opps, left that out. We replaced all the pushrods as it seemed with the variences that they were hitting on the casting flash a little. Enough to mark them all.

These 1.97'* have been a disappointment. Yella Terra are the way I am going for my next set.
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Old 11-02-2007, 06:41 PM   #40
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Quote:
Originally Posted by avex
Opps, left that out. We replaced all the pushrods as it seemed with the variences that they were hitting on the casting flash a little. Enough to mark them all.
I was suprised to see people running 1.97s down there. I know 1.95 is the largest raito we have in the states and it was said to be the max before hitting the casting flash.
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