1750 engine into a Sprint 750B 1959

[Tacconi]

Hello
This weekend I made a try to fit the 1750 engine ( just the engine block) into my 750B Sprint, it was a tight fit with the engine rubber mounts, but the biggest problem was that the engine touch the brake master cylinder.
I have bought the engine mounts with rubbers from Classic Alfa in England.
The engine mount rubbers are 48mm high ( without the studs).
I have attached some photos of the problem, and the mounts.
Does anyone have some good ideas?
Kind regards
Chris
Norway

[concept 101]

Chris,

With all respect, my idea would be to source a 101 1600 block/engine, and if you want some extra power, fit it with 2 Webers, trim it and you won´t have any of these problems. After all, it would be only 150 cc less.

Dennis

[AlfistiSA]

Hi Chris

I'd suggest mixing & matching engine mountings until you find ones that will allow the block to clear the Master Cylinder.

There are quite a few different mounting lengths to be able to get the motors fettled properly.

At last resort, simply grind away a portion of the crank case web - Alfa engines are massively over engineered & if you are careful, you could relieve the block at the contact point, without compromising the structural integrity.

For what it's worth, I agree with Dennis, the 1600cc motor in a 101 body is a blast & it doesn't keep spinning the wheels like the 1750 / 2000's do.

Ciao
Greig

[papajam]

Centerline Alfa sells an engine mount, #EM502, specifically designed for installing a 1750/2000 engine into a 750/101 chassis. It lowers the engine by 25mm.

[Tacconi]

Hello
Thank you for reply!
Ok so the 1600 105 engine is smaller outside?
Today I bought som Volvo B18 rubber engine mounts, they where 8mm thinner and I then got a clearence from the mastercylinder.
I also put the cylinder head on the engine and mounted the Centerline ex.manifoild, who also was a tight fit.
I also fitted the Alfetta oil sump, and 101 clutch housing.
Then the next problem appeared, the cluth release arm had been modyfied, see photo attached, does anyone have a photo of a release are how it should be?
The problem for me is that the car came without a engine, and the last engine who was in the car was a 1600 Fiat TC engine, and I have never seen a Giulietta inside the engine bay.
Kind regards
Chris
Norway

[Tacconi]

Quote:

Originally Posted by papajam Centerline Alfa sells an engine mount, #EM502, specifically designed for installing a 1750/2000 engine into a 750/101 chassis. It lowers the engine by 25mm.

[Subtle]

Chris

I think the CL mounts are designed such that the 2 L will fit under the hood of the 101 Spider.

It seems to me that the hood of the Sprint has more clearance.

In which case, if you can get the 1740 in using mounts other the CL the oil sump won't be hanging down as far.

Mine is very vulnerable to road hazards.

[Gordon Raymond]

Hi Chris,
Having done a bunch of Alfa engine swaps, the 1750, is one of my favorites. The 1750 revs like a 1600, but not quite as quick as a 1300. It provides plenty of torque for good low end pull.
As both papajam, and Subtle suggest, the Centerline mounts are the easiest to work with. As you progress, you will find the 1750 is a tad taller in the block than the 1300/1600. While you may have hood clearance, Veloce headers will be too tight to the under chassis. The easiest solution is to lower the engine. Centerline's mounts look nothing like the Veloce style mounts you pictured. They have a neat kink in them that, lowers the engine, just enough. They allow room for Webers, and Veloce headers. I believe these are what Subtle used when fitting his 2L to his 101 chassis.
What mounts did you have with the original engine? I ask, as if you had any, they would work as the mount stud location on the 1300/1600/1750 blocks are the same, and the block dimensions are also very close to one another.
There are a few other installation problems fitting the 1750 to the 101/750 chassis as you will need an earlier style oil pan pump and pick up, and may have dipstick relocation issues unless you have located the front cover that works with the carburetor style 1750 block. Again Subtle has successfully worked with these issues with a 2L which is the hardest to fit in there. I'm sure if they are reading this, both papajam and Subtle will have much to add. Gordon Raymond

[Subtle]

When I think about it the whole CL kit makes for a straight- forward instal.

And I can and do live with less clearance--and that is with standard rate springs, shocks and ride height.

[Tacconi]

Quote:

Originally Posted by Gordon Raymond Hi Chris, Having done a bunch of Alfa engine swaps, the 1750, is one of my favorites. The 1750 revs like a 1600, but not quite as quick as a 1300. It provides plenty of torque for good low end pull. As both papajam, and Subtle suggest, the Centerline mounts are the easiest to work with. As you progress, you will find the 1750 is a tad taller in the block than the 1300/1600. While you may have hood clearance, Veloce headers will be too tight to the under chassis. The easiest solution is to lower the engine. Centerline's mounts look nothing like the Veloce style mounts you pictured. They have a neat kink in them that, lowers the engine, just enough. They allow room for Webers, and Veloce headers. I believe these are what Subtle used when fitting his 2L to his 101 chassis. What mounts did you have with the original engine? I ask, as if you had any, they would work as the mount stud location on the 1300/1600/1750 blocks are the same, and the block dimensions are also very close to one another. There are a few other installation problems fitting the 1750 to the 101/750 chassis as you will need an earlier style oil pan pump and pick up, and may have dipstick relocation issues unless you have located the front cover that works with the carburetor style 1750 block. Again Subtle has successfully worked with these issues with a 2L which is the hardest to fit in there. I'm sure if they are reading this, both papajam and Subtle will have much to add. Gordon Raymond

[Tacconi]

Quote:

Originally Posted by Subtle When I think about it the whole CL kit makes for a straight- forward instal. And I can and do live with less clearance--and that is with standard rate springs, shocks and ride height.

[Subtle]

I was distracted by the notion that the Sprint hood had more height over the top of the engine.

The CL kit includes the mounts which drop and tilt the engine over. The tilt allows room for the CL cold air box on the carbs. Some use small air filters, but the trick in using the cast aluminum box is that the strut that holds up the carbs needs to be lengthened.

All of this ends uo with different geometry, and CL headers are designed to fit the new coordinates.

The new geometry also changes the alignment of the throttle linkage.

[Subtle]

If you can get the carbs and headers to fit with whatever mounts you use--go for it.

Where do you live?

[Tacconi]

Quote:

Originally Posted by Subtle If you can get the carbs and headers to fit with whatever mounts you use--go for it. Where do you live?

[Subtle]

In the West coast of Canada--at this time of year, often referred to as the "Wet Coast"