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Shorrock blower on a Frogeye

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  #1  
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Healey Man
 
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Default Shorrock blower on a Frogeye - 05-04-2005 , 12:43 PM






has anyone seen one of these fitted? I have most of the parts in kit form,
but the bigger front pulley will be just touching the front crossmember by
the look of it, any ideas? I could cut out the crossmember like on the Big
Healey, but I'm not sure if that is wise.... or I could make some kind of
tie bar to hold the engine back a few millimeters. what is the recommended
way?
Charlie



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Dave Plowman (News)
 
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Default Re: Shorrock blower on a Frogeye - 05-04-2005 , 05:19 PM






In article <4278fbac$0$25021$8fcfb975 (AT) news (DOT) wanadoo.fr>,
Healey Man <ask- me (AT) anti-spam (DOT) co.uk> wrote:
Quote:
has anyone seen one of these fitted? I have most of the parts in kit
form, but the bigger front pulley will be just touching the front
crossmember by the look of it, any ideas? I could cut out the
crossmember like on the Big Healey, but I'm not sure if that is
wise.... or I could make some kind of tie bar to hold the engine back a
few millimeters. what is the recommended way?
If you're thinking of blowing the original 948 - don't. It's a very weak
unit. Just fit a 1275 instead. Done with care, no one could tell. You'll
get the same torque without the aggro and better reliability.

--
*No radio - Already stolen.

Dave Plowman dave (AT) davenoise (DOT) co.uk London SW
To e-mail, change noise into sound.


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Asolepius
 
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Default Re: Shorrock blower on a Frogeye - 05-05-2005 , 06:15 AM




"Healey Man" <ask- me (AT) anti-spam (DOT) co.uk> wrote

Quote:
has anyone seen one of these fitted? I have most of the parts in kit form,
but the bigger front pulley will be just touching the front crossmember by
the look of it, any ideas? I could cut out the crossmember like on the Big
Healey, but I'm not sure if that is wise.... or I could make some kind of
tie bar to hold the engine back a few millimeters. what is the recommended
way?
Charlie

I have the original 1960 issue of Motor Sport containing John Bolster's road
test of the blown Frogeye. There is a pic of the engine but it probably
won't show what you want. There were no chassis mods, so I am wondering if
you have the right blower. Quite a few of these cars were produced by the
works and they were reasonably reliable. Power was about the same as a 1275,
so you are better off dropping in one of those - you will have cheaper
insurance as well I would guess. Blowing 948s is popular in the US but they
more commonly use Judson units. If it were me, I would go for a tuned
unblown 1275 for power and reliability. But there is something about a
blower....




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David Billington
 
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Default Re: Shorrock blower on a Frogeye - 05-05-2005 , 08:01 AM



Well apart from the differences in the block and head castings, such as
the lack of tappet chest covers on a 1275.

Dave Plowman (News) wrote:

Quote:
In article <4278fbac$0$25021$8fcfb975 (AT) news (DOT) wanadoo.fr>,
Healey Man <ask- me (AT) anti-spam (DOT) co.uk> wrote:

has anyone seen one of these fitted? I have most of the parts in kit
form, but the bigger front pulley will be just touching the front
crossmember by the look of it, any ideas? I could cut out the
crossmember like on the Big Healey, but I'm not sure if that is
wise.... or I could make some kind of tie bar to hold the engine back a
few millimeters. what is the recommended way?


If you're thinking of blowing the original 948 - don't. It's a very weak
unit. Just fit a 1275 instead. Done with care, no one could tell. You'll
get the same torque without the aggro and better reliability.



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  #5  
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David Billington
 
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Default Re: Shorrock blower on a Frogeye - 05-05-2005 , 08:06 AM



There was one in the healey club based out of Bovey Tracey Devon IIRC.
Nice period installation and apparently ran well. I recall it having a
twin V belt drive but don't recall if any other changes were made. If
you contact the local area club representative they should be able to
help you locate the owner of the car.

Healey Man wrote:

Quote:
has anyone seen one of these fitted? I have most of the parts in kit form,
but the bigger front pulley will be just touching the front crossmember by
the look of it, any ideas? I could cut out the crossmember like on the Big
Healey, but I'm not sure if that is wise.... or I could make some kind of
tie bar to hold the engine back a few millimeters. what is the recommended
way?
Charlie




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  #6  
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Healey Man
 
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Default Re: Shorrock blower on a Frogeye - 05-05-2005 , 10:04 AM




"David Billington" <djb (AT) djbillington (DOT) freeserve.co.uk> wrote

Quote:
There was one in the healey club based out of Bovey Tracey Devon IIRC.
Nice period installation and apparently ran well. I recall it having a
twin V belt drive but don't recall if any other changes were made. If you
contact the local area club representative they should be able to help you
locate the owner of the car.

Healey Man wrote:

has anyone seen one of these fitted? I have most of the parts in kit form,
but the bigger front pulley will be just touching the front crossmember by
the look of it, any ideas? I could cut out the crossmember like on the Big
Healey, but I'm not sure if that is wise.... or I could make some kind of
tie bar to hold the engine back a few millimeters. what is the recommended
way?
Charlie
Thanks for your recommendations - the 1275 would be a nicer drive probably
but not eligable for period rallys and runs. And I already have the
blower......
You are correct, the drive is a twin V belt, so there is a new front pulley
with 3 drives, one original and two for the blower. This will fit, but it is
so close, that it will touch occasionally, and definately under braking; A
small mod on the front engine mount would probably do it. I will chase up
your Devon club recommendation.




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  #7  
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Rob
 
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Default Re: Shorrock blower on a Frogeye - 05-05-2005 , 07:42 PM



David Billington wrote:
Quote:
Well apart from the differences in the block and head castings, such as
the lack of tappet chest covers on a 1275.

Thats the later block that don't have push rod covers.


Quote:
Dave Plowman (News) wrote:

In article <4278fbac$0$25021$8fcfb975 (AT) news (DOT) wanadoo.fr>,
Healey Man <ask- me (AT) anti-spam (DOT) co.uk> wrote:

has anyone seen one of these fitted? I have most of the parts in kit
form, but the bigger front pulley will be just touching the front
crossmember by the look of it, any ideas? I could cut out the
crossmember like on the Big Healey, but I'm not sure if that is
wise.... or I could make some kind of tie bar to hold the engine back a
few millimeters. what is the recommended way?


If you're thinking of blowing the original 948 - don't. It's a very weak
unit. Just fit a 1275 instead. Done with care, no one could tell. You'll
get the same torque without the aggro and better reliability.



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