Poll - What engine are you using

Any topics pertaining to the BMC A-Series engine.

What engine is currently in your car?

948 cc (original size for my car)
1098 cc (original size for my car)
1275 cc (original size for my car)
1275 cc (I swapped my original size for a 1275 cc)
Big Bore A-Series (1300+ cc bored out 1275 cc)
1500 cc (original Midget)
No votes
Other (engine swap (Mazda, Ford, etc.))
Total votes : 134

Poll - What engine are you using

Postby admin » Wed May 26, 2004 12:52 pm

It's my impression that not many folks are running their original displacement engines (many Spridgets have been converted to 1275 cc displacement engines, if not larger).

Please post your current engine configuration on this poll. Let's find out what people are really using.

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engine size

Postby Leroy » Sun May 30, 2004 7:08 pm

My car will have 1275 when done. I have origiional 948, two 1098 and the 1275 to rebuild when car is ready for mill. Leory
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Postby JP Furble » Sun Jun 06, 2004 11:16 pm

I'm in the process of a total restoration of my '61 Bugeye which I originally purchased in 1967. Been working on it for about 3 years and should have it on the road this summer. I took the 948cc out of it (it had been bored, balanced, ported, 11:1 comp ratio, Weberized, radical cammed, etc. and was difficult to drive on the street) and have installed a stock 1275 with a Rivergate 5-speed conversion. Also have converted to disk brakes in the front. Hoping that this engine, tranny, and brake combination will make the car a little more "civilized". I'm getting older and need a little civilization!

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Postby Matt » Mon Jun 07, 2004 6:31 am

I havent got on in my car atm.... but a 1275 will go in as standard
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Postby dan » Mon Jun 07, 2004 8:30 am

JP Furble wrote:...have installed a stock 1275 with a Rivergate 5-speed conversion...
JP Furble

JP--how's your experience been with the Rivergate? I really need to do this, but I've yet to take the plunge. However, seeing as I'm missing at least one tooth in my smoothcase presently (it came out in the last oil change! :( ), it's likely time for a new tranny.

Maybe we should move this conversation to the "Conversions" forum in the Transmissions section?

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Postby bugeye58 » Fri Oct 01, 2004 7:34 am

Nuts! I could only list one car in the poll.
But, the 948 cars still have their 948's
Ditto for the 1098 cars, although one of them has been upgraded as far as performance goes.
The 1275 cars I have are all stock.
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Postby 60Bugger » Sat Oct 15, 2005 3:08 pm

1380 280 cam 6"manifold 45dcoe and tons of internal mods coupled to a datsun 5-speed.
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1098 instead of 1275

Postby Jim Gruber » Wed Jan 25, 2006 2:14 pm

I've got a 1098 and Smoothcase that was transplanted into my '68 sprite by a P.O. Engine runs fairly smooth but sure isn't a high rev engine by any means. Have a spare 1275 and Rib Case in garage that will go in when I repaint the engine compartment next year.
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Re: 1098 instead of 1275

Postby bugeye58 » Wed Jan 25, 2006 6:30 pm

Jim Gruber wrote:I've got a 1098 and Smoothcase that was transplanted into my '68 sprite by a P.O. Engine runs fairly smooth but sure isn't a high rev engine by any means.

That's a shame, Jim. I've got a big crank 1098 in a '65 that is still pulling hard when I shift at 7000.
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Postby Jim Gruber » Thu Jan 26, 2006 11:40 am

I don't know the history on this particular 1098. Not sure if it is a small or large journal 1098. P.O. claimed it came from a '66 which would make it q large journal but this engine simply seems to run out of power above 4500 rpm. Low end torque is great and it gets decent gas mileage on the road but top end power just isn't there. I've played with timing, valves, and even the carbs but engine makes a whole lot of noise but just won't rev any faster. It acts like the tractor engine it was derived from. Eventually the engine will be replaced by a 1275 that was described by local LBC shop as a real strong engine. The P.O. of that engine replaced 1275 in his Arkley bodied Sprite with a 1480 and a 5 speed. I have not run the engine but he told me it was consuming a quart of oil every 100 miles so it may be in need of a valve or ring job. Engine came with a Rib Case that was described as almost perfect. So I've got an unknown quantity. One of these days I'll get around to the engine swap. I'll end up doing it when I repain the engine compartment. since Bugsy is in various shades of rust, BRG, along with grey and black primer hopefully sometime soon. Welder is on hte purchase list as some shhet metal needs fixed and that will come before an engine swap out.

Bugsy and I just came back from coffee. 28 degrees and sunny out so it seemed the perfect time for a quick jaunt. Bugsy gets driven even in the winter when it's nice out. I hate to pull him off of the road for an extended period of time to make the needed repairs. Take care.
Jim Gruber
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Postby Sprite33 » Thu Jan 26, 2006 12:53 pm

My answer didn't fit the poll. I run a 1098 but a 948 was the original engine. I know this poll is probably for street cars but I will contribute a little information anyway.

My 1098 pulls hard right up to the 8,200 rpm red-line. Actually I accidentally ran it up to 9,000 rpm once thinking I was in fourth gear. I was so intent on passing another car that I forgot I was still in third. :oops: I would not say it was still pulling hard but it was still pulling.
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Postby Green Hornet » Mon Jul 10, 2006 11:17 pm

The original engine is powerful enough to haul me around town without any problems. I have the original brakes on my car so I don't want a bunch more engine. :wink:
The results surprise me too. I would have thought that "other" or the 1098 would have been higher. :?
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Postby middleagecrazy » Tue Jul 11, 2006 1:45 pm

My 69 Sprite has a 73 vintage MG 1275 in it. Installed by a previous owner.

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Postby hpmowog » Tue Jul 11, 2006 6:48 pm

This poll isn't accurate. It only let me vote once. I've got cars that fit 4 of these categories :wink:
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Re: Poll - What engine are you using

Postby scoutll » Mon Mar 16, 2009 10:16 pm

Mine has the original 1098 CG enging that it came with. It works fine and seems to have ample power (for me anyway). :D
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North Dakota, USA????
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