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Learning how to build Lotus Seven replicas...together!
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PostPosted: November 8, 2018, 8:07 pm 
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Joined: December 24, 2007, 5:11 am
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Location: Seattle area
JD,

Amazing what a 1/4" difference can make when dealing with clearance around an engine. My header was not the best thought out piece on my build. Was banging on the upper frame rail and hitting the steering shaft but only on hard acceleration. Just revving the engine sitting still didn't do it. Some adjustments cured it but my problem was with a lot smaller engine than yours and no rotating parts involved.

If you didn't find any broke stuff and what you did find (paint scruffs and all) just might be the culprit.

Cheers and get the gremlins out.

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PostPosted: November 8, 2018, 9:11 pm 
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Location: Holden, Alberta, Canada
benny_toe wrote:
Amazing what a 1/4" difference can make


:rofl: Oh my God, you took the words right outta my wifes mouth!

Again I apologize JD, I may need help, as this has nothing to do with your troubles.

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PostPosted: November 9, 2018, 7:14 am 
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Joined: March 30, 2011, 7:18 am
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Location: central Arkansas
Miatav8,MstrASE,A&P,F wrote:
I'm thinking torque strap also. Very common issue of breaking the drivers side engine mount.


The motor mounts on the old German Capris were huge rubber cylinders, like half a beer can. Worked pretty good for vibration control, but they let the engine move around a lot. I put a chain from the head to the strut tower on one of my 2-liter cars, which had an entirely unexpected result: the clutch action (and it was a cable clutch!) was vastly improved, with a much smoother, linear let-off. I figured the whole driveline twisted against the mounts when I was letting the clutch in, then unwound.

For that matter, I had the engine in a Mustang torque over so hard the clutch bellcrank came off the ball on the block... and those were brand new rubber mounts, too. But the engine was considerably healthier than stock.


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PostPosted: November 9, 2018, 7:16 am 
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benny_toe wrote:
Amazing what a 1/4" difference can make when dealing with clearance around an engine. My header was not the best thought out piece on my build.


In JD's case, I half-expect the Slotus will reappear with some sporty tractor-pull type stacks going straight up. With little flapper caps on top... maybe painted yellow, with happy faces.


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PostPosted: November 9, 2018, 7:57 am 
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TRX wrote:
In JD's case, I half-expect the Slotus will reappear with some sporty tractor-pull type stacks going straight up. With little flapper caps on top... maybe painted yellow, with happy faces.
The first rule of science is "Never say never" but in this case... :roll:

I haven't progressed to examining the motor mounts yet, but I don't think they're actually broken. I do think the shims that tilted the engine over and let the valve cover clear the foot box also allowed the engine-trans to twist over under heavy load (Like the big ol' V8 roaring, tire smoking, Hide-The-Wimmin-and-Chillruns launch I did at the start line) and hit the safety hoop.

I did, however, take a length of heavy pipe left over from the sway bar and beat the snot outta that safety hoop. I bent it downward a bit from the top, causing it to swell outward. Widened it, in other words. Made me feel better, too... Pounded that barstard into submission... WHAM!!! :evil: "That'll teach you to ruin my race-day, you sorry sumbich!!!" WHAM!!! :evil: Ahhh... I feel better now... :mrgreen:

:cheers:
Peace, Love and WHAM!!!
JDK

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JD, father of Quinn, Son of a... Build Log
Quinn the Slotus:Ford 302 Powered, Mallock-Inspired, Tube Frame, Hillclimb Special
"Gonzo and friends: Last night must have been quite a night. Camelot moments, mechanical marvels, Rustoleum launches, flying squirrels, fru-fru tea cuppers, V8 envy, Ensure catch cans -- and it wasn't even a full moon." -- SeattleTom


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PostPosted: November 9, 2018, 8:21 am 
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horchoha wrote:
:rofl: Oh my God, you took the words right outta my wifes mouth!
Again I apologize JD, I may need help, as this has nothing to do with your troubles.


Again, Perry, I'd have thought less of you if you hadn't gone for it.
And like a true-blue, polite Canadian, you apologized immediately... :mrgreen:

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JD, father of Quinn, Son of a... Build Log
Quinn the Slotus:Ford 302 Powered, Mallock-Inspired, Tube Frame, Hillclimb Special
"Gonzo and friends: Last night must have been quite a night. Camelot moments, mechanical marvels, Rustoleum launches, flying squirrels, fru-fru tea cuppers, V8 envy, Ensure catch cans -- and it wasn't even a full moon." -- SeattleTom


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PostPosted: November 9, 2018, 9:11 pm 
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Why not just fab up some solid engine mounts? It's a racecar after all. My dad crammed a 427 SOHC into a 67 Falcon back in the day, even with cutting out as much as he could out of the shock towers he still had to mount the engine solid. Dropping it in was a bit involved too. I don't remember for sure, but I think he said he had to have the valve covers off, #2 and #3 exhaust valves both open, then drop it in crooked so the left side would clear the shock tower first and straighten it out to get the right side down. And that was a street legal car that he actually drove.
Kristian

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