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Blog: MotorMouth by Kris Palmer

“New” Fan and Grille for a One-Owner Skylark

Friday, May 9th, 2008

Several years ago, a man read an article I wrote for the paper talking about the 215 V8 engine going in my TR6. He had the same engine in his ‘62 Skylark and was looking to have it rebuilt. He needed a rebuilder and, since they usually don’t pull the engine for you, some help on that preliminary chore.

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Have engine hoist, will travel. I said I’d pull the motor for him and recommended Adelmann Engine, which rebuilt my 215. Conceptually, removing an engine from this era is not hard, but there was some grease involved. When I got home I looked like I’d spent the day on the Exxon Valdez cleanup.

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Rebuild and resto turned out nice, but there were two imperfections still dogging owner Tom Veilleux. One was a tendency for the engine to get hot when it stood for too long on a summer day. The other was the grille, which had gotten cracked somewhere along the way and was crooked to boot.

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I had an extra six-blade fan to replace the stock four-blade item and Tom had picked up a nice stock grille at Sonny’s Auto Salvage to swap out his broken one.

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So we drained and pulled the radiator, unbolted the four-blade fan, and swapped in the six. The blades on his original piece were longer, so there’s some question how much more air the six-blader will move. We concluded that a shroud would be a big help. I also noticed that the gap of 2 inches from the blades to the radiator was too much. At about an inch, he’d get better cooling. A spacer would correct that and I have a 7/8 inch one that would be about right. Unfortunately it was on my garage shelf.

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The car won’t be on the road quite yet, though, so the spacer can go in shortly.

Straightening the grille proved more time consuming. It’s a three-piece item–the wide center, with a two-headlight piece on each end. The Sonny’s center and driver’s-side headlight pieces looked best but we reused Tom’s passenger-side headlight piece because the headlight bucket was very rusty on the replacement.

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(Gaps were worse than this–this is after a little fiddling.)

The driver’s-side headlights were low, while the other side nearly touched the top of the grille cavity. Loosening and repositioning with the stock holes wasn’t enough. I kept out the bolts, positioned the grille in a spot where Tom, viewing from the front of the car some ten paces out, was happy, then marked with a Sharpie the additional sheetmetal surrounding each mounting hole that needed to be removed to allow it to bolt up straight.

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In his 46 years with the car, Tom doesn’t remember the grille being crooked. Somehow during the recent body restoration, things got out of kilter. But no problem–we got things squared up and bolted down.

The final touch was to adjust the rubber stops on which the hood rests. These were threaded in too far, allowing the hood to rest too low. We backed each one out until Tom was happy with where it sat. (Sharp, well-informed eyes will notice that the front radiator mount has been bent out on its back piece, which now projects over the fan when it should sneak in front of it parallel to the grille. This suggests that someone may have run into fan interference and bent it out of the way. Perhaps they removed an important spacer at the same time to create too big a gap for proper cooling.)

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All the minor adjusting pushed this job out to five hours, but the car looks a lot better and when the sun is shining and you’re out cruising, that’s important peace of mind.

9 Responses to "“New” Fan and Grille for a One-Owner Skylark"

Cameron says:

May 12th, 2008 at 9:09 am

So how is that TR6 project? I remember seeing the car in your garage some 12 years ago or so.

Kris Palmer says:

May 12th, 2008 at 9:26 am

Yeah, that was before or after a soccer game maybe? Twelve years ago was before the car got pulled apart, the body and frame stripped and painted, the new engine pulled, rebuilt and installed, etc.

It sits on the threshold of readiness. I need to get it to an exhaust shop for custom downpipes, get the dual exhaust system fitted, then install the back bumper, passenger seat, carpets, window tracks, glass and handles and a few interior trim pieces.

Two weekends’ efforts might do it. Got a book project and a film project to finish first, then it gets my full attention.

Dave G says:

May 12th, 2008 at 10:12 am

I’m planning on using an electric fan setup on my convertible. That 455 never did like sitting in traffic on warm days. Part of the problem was an undersized radiator, which I plan to remedy with a four row core replacement. As for the fan system, I made an interesting discovery when I owned a 1990 Olds Silhouette minivan. It developed a leak in the radiator when it was about five years old. I removed the shroud, which included the electric fan assy, and then removed the radiator to take to the shop. When I retrieved it, something about its appearance bugged me. I set it down in front of the van, retrieved the convert radiator from storage, and placed in next to the van’s. The two were virtually identical. All measurements were the same. I could have very well have installed the van’s radiator in the convert with no problem. That’s when I grabbed the shroud/fan assy, sized it up against the convert unit, and had an “AHA!!” moment. I’ve since done a little research and discovered it is indeed a good fit, and I should use a later shroud/fan (’93/96) as fan capacity was increased for the 3.8 V6. (The ‘90 through ‘92 had only a 3.1 available.) With a relay system involving a thermostatic switch, and manual override, I should be able to come up with a low buck system.

Kris Palmer says:

May 12th, 2008 at 11:05 am

Good tips, Dave, thanks. An electric fan would surely provide better cooling than the belt-drive system originally fitted to the 215 V8s. I like the stock look, though.

I had originally–over-optimistically–fitted the Triumph’s 2.5 litre radiator to my 3.5 liter V8. It fit well, but it didn’t, as expected, cool adequately. I’ve since swapped in a proper 215 radiator–rebuilt with a more efficient core by Carlberg Radiator. At idle, it still runs a little warm. I’ll try a shroud first and if that doesn’t cool things down to proper temp, then an electric fan will be the solution: stock look is one thing, but I won’t cook the motor for appearances. :^)

Cameron says:

May 12th, 2008 at 3:55 pm

I had a BMW 2002 tii with an electric fan. It worked well and never had any problems with temperature.

Kris Palmer says:

May 13th, 2008 at 5:14 pm

I hear you, Cameron. They’re definitely the modern solution to this problem. Only problem I had with one was on my ‘77 Rabbit many years ago. The thermostatic switch on it quit so that when the engine got hot it didn’t kick on. Overheated the engine and cracked the head.

I put in a junkyard motor that worked OK but used oil.

Once you’re used to the old look, it’s hard to give up that fan off the front of the engine. The stock TR6 used a shroud. This radiator’s wider than that, but the stock piece might be a decent starting point. I’m going see about balancing the assembly first. The fan and fan clutch have a slight wobble now–I don’t want it to chew through my water pump bushes.

Richard in PDX says:

May 13th, 2008 at 10:44 pm

Impressive work by you and Tom.

That’s one sweet Skylark!

Cameron says:

May 14th, 2008 at 7:51 pm

Can you install a different thermostat that will trigger the stock fan at a lower temperature?

My tii had a switch to turn the fan on manually if needed which helped eliminate what happened with your old Rabbit.

Kris Palmer says:

May 14th, 2008 at 9:07 pm

I’m sure you can find the pieces to kick it on at a lower temp.

My switch broke and because the gauges on the rabbit were so primitive–no temp gauge, just an idiot light–I didn’t notice what had happened until the engine had overheated.

It’s a rare situation. Most of the British car V8 swappers on the ‘net seem to be running electric, due to efficiency and space. Once the car’s running, I may find myself updating various things for better performance.

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MotorMouth Kris Palmer, freelance auto writer and editor, blogs about vintage cars, the collectible auto scene and just about anything else that goes vroom.

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