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MARCOS XP WEBSITE ( Questions ) !!!!

MARCOS XP WEBSITE ( Questions ) !!!!

2002-04-12 by Lee Brinkley

Hi all again,

On exploring Dave McGill's XP web site and seeing pictures of his own
1600 GT
I have a few questions that Dave may be able to answer. My own car has
been converted from its original 1650 Lawrancetune engine to a standard
1600 GT Flow at some time in the past and Dave's car appears to also
have a Floe engine installed. During my rebuild I intend to update the
engine spec and part of that upgrade will be to convert to a twin carb
spec.

Questions if Dave or anyone else can help....

1. What spec is your engine built to Dave.

2. What type of carbs, trumpets, throttle linkages, air cleaners are
fitted.

3. What intake manifold is used (is it especially small between the
head         flange and carb mounting faces) to allow package space.

4. Were any modifications required to engine location, steel subframe,
wooden    foot wells or steering linkage to allow this installation.


Best regards everyone, have a good weekend..

Lee Brinkley

1600 GT 5097 Reg. SMX138F

lbrinkley@...
(044)(0)1277 261400
Fax: (044)(0)1277 261525

RE: [MarcosManiacs] MARCOS XP WEBSITE ( Questions ) !!!!

2002-04-13 by Dave McGill

Hi Lee,
You have one of the very few Lawrancetune cars, only single figures of these were ever produced. I know of only one other, and that is a complete restoration project. It's not even got a chassis!!
Let me try and answer some of these question. Problem is it would take a book...........
1 - The engine spec is fast road - race. As it meant back in the 70's. Not up to today's standards of micro chips and gas injection, but comprises from what I remember of........
Engine is a bored out 711M block (Stronger Main Bearings) to 1700cc.
Tufrided, Lightened and balanced - Flywheel, Crank, Rods etc.
Stage III head - Ported and polished, with Max size valves.
Piper 285 Cam.
Steel Pulley's, Valve train. Duplex timing chain.
2 - Carbs fitted are a pair of twin 40DCOE Delortoe's, no trumpets (No room), custom throttle linkages. The air filters are I think made by a company called RamFlow. But I can check that for you at a later date. Made for Webbers, but fit Delortoes with no problem. Air cleaners cause the biggest head ache, there is just so little room between bonnet, steering rack and chassis.
3 - The Intake manifold was a standard period of the shelf item. No idea of brand name but are one of the most common fitments to the 1600 xflow. The manifold pipes must be around 3" long which puts the air cleaner face of the carbs just above the steering column.
4 - No modification to the car is need, the only problem is getting the carbs to end up in the space between bonnet, steering rack and chassis. To make this happen I had to machine the face of the inlet manifold a couple of mill, to drop the carbs away from the inside of the bonnet.
Hope this helps, but as yours is a Lawrancetune, I'd be tempted to keep it standard

Cheers,
Dave.
#5118 1967 Ford 1600GT

Show quoted textHide quoted text
-----Original Message-----
From: lee@roush.co.uk [mailto:lee@...]On Behalf Of Lee Brinkley
Sent: 12 April 2002 12:40
To: MarcosManiacs@yahoogroups.com
Subject: [MarcosManiacs] MARCOS XP WEBSITE ( Questions ) !!!!

Hi all again,

On exploring Dave McGill's XP web site and seeing pictures of his own
1600 GT
I have a few questions that Dave may be able to answer. My own car has
been converted from its original 1650 Lawrancetune engine to a standard
1600 GT Flow at some time in the past and Dave's car appears to also
have a Floe engine installed. During my rebuild I intend to update the
engine spec and part of that upgrade will be to convert to a twin carb
spec.

Questions if Dave or anyone else can help....

1. What spec is your engine built to Dave.

2. What type of carbs, trumpets, throttle linkages, air cleaners are
fitted.

3. What intake manifold is used (is it especially small between the
head flange and carb mounting faces) to allow package space.

4. Were any modifications required to engine location, steel subframe,
wooden foot wells or steering linkage to allow this installation.


Best regards everyone, have a good weekend..

Lee Brinkley

1600 GT 5097 Reg. SMX138F

lbrinkley@...
(044)(0)1277 261400
Fax: (044)(0)1277 261525


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