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Search: Posts Made By: jac mac
Forum: All GT40 Today, 08:07 PM
Replies: 12
Views: 346
Posted By jac mac
Re: Help to Identify a Gulf GTD.....

Re Bonhams auction data, IIRC the 'M6007-C347' is the Ford Motorsport part # for the 347 crate engine, hardly likely to use that as part of chassis number.
Forum: The SLC Clubhouse Today, 07:29 PM
Replies: 2
Views: 50
Posted By jac mac
Re: LS3 water pump rotation?

If the pump is centrifugal it wont necessarily reverse rotation, just wont be as efficient. The pump pulley should ID rotation if its a poly vee belt, flat surface would be driven by back side of...
Forum: The SLC Clubhouse Today, 02:21 PM
Replies: 45
Views: 7,752
Posted By jac mac
Re: Which Griffin Transaxle Behind a LS376?

Joseph, not 100% sure, but get the feeling you might be one of the first to have one, that need not be a bad thing based on the old theory that bad news travels fast where good news seldom gets air...
Forum: The Paddock 14th November 2017, 09:16 PM
Replies: 10
Views: 348
Posted By jac mac
Wink Re: Electric cars, in a nutshell...

Is it going to be his 24hr Le Mons entry??, might need a long cord.
Forum: GT40 Build Logs 13th November 2017, 10:49 PM
Replies: 332
Views: 101,144
Posted By jac mac
Re: Dean's GT-R build thread

Logged in here last on 21 Oct 2017, about 3 weeks ago..
Forum: GT40 Tech - Engines/Induction/Exhaust 12th November 2017, 10:14 PM
Replies: 6
Views: 347
Posted By jac mac
Re: Oil cooler placement

Are you running two coolers?, one at front of car plus that one in pic and I presume in series, that is a lot of oil & distance for the OE pump to move. One other thought, since that cooler will grab...
Forum: GT40 Tech - Powertrain/Transaxles 4th November 2017, 09:02 PM
Replies: 12
Views: 588
Posted By jac mac
Smile Re: Reverse Rotation Automatic Transaxle. Planetary gearset?

Absolutely clear! Will it work?, depends on how the Audi transaxle is arranged internally & since I don't have access to one I'm not going to tie my grey matter in knots figuring it out- one...
Forum: All GT40 4th November 2017, 06:43 PM
Replies: 53
Views: 1,737
Posted By jac mac
Re: The Paddock Poll

Was it Public Libraries or School/College libraries, IIRC it was Doug who mentioned it & he was referring to his work situation.
Forum: All GT40 3rd November 2017, 06:36 PM
Replies: 53
Views: 1,737
Posted By jac mac
Re: The Paddock Poll

38 votes at this moment out of 14931 membership ( probably a few departed amongst that # ) is hardly justification for anything really!
Forum: All GT40 2nd November 2017, 04:42 PM
Replies: 53
Views: 1,737
Posted By jac mac
Re: The Paddock Poll

Biased way to run a poll, 4 options, three based on staying open vs one to close. Shouldn't it be two-Remain or Close and then a further Poll if its Remain for the options. Just a thought from...
Forum: GT40 Tech - Powertrain/Transaxles 31st October 2017, 03:22 PM
Replies: 12
Views: 588
Posted By jac mac
Re: Reverse Rotation Automatic Transaxle. Planetary gearset?

Maybe I read this first post wrong



Clarify that for us & it will keep your thread on track!
Forum: Site Questions, Suggestions, & Comments 30th October 2017, 11:24 PM
Replies: 81
Views: 3,172
Posted By jac mac
Re: Is gt40's important to you - let us know your thoughts

Without a paddock and/or political forum, to do so incurs the wrath of Jamo just sayin!
Forum: GT40 Tech - Powertrain/Transaxles 29th October 2017, 10:41 PM
Replies: 5
Views: 320
Posted By jac mac
Re: Trans Ratio's

According to the chart I found a G96/96 would/should have a 0.85 6th, Assuming the ratios interchange you would have 0.82 & 0.75 6th gear options. Your current 6th with 3.44/1 R&P will give 2.92/1...
Forum: GT40 Tech - Powertrain/Transaxles 29th October 2017, 03:57 PM
Replies: 5
Views: 320
Posted By jac mac
Re: Trans Ratio's

Which variant of G96 do you have, 3.44/1 R&P is tallest factory on list I found, but there are 6th gear ratios from ,75 .82, .85, .86.... Part number G96-.... is critical.
R&P is only part of the...
Forum: Site Questions, Suggestions, & Comments 25th October 2017, 08:58 PM
Replies: 81
Views: 3,172
Posted By jac mac
Re: Is gt40's important to you - let us know your thoughts

IIRC the lifetime supporter/membership status was dropped/no longer available a few years ago, those who had subscribed still have it shown on their posts etc, only gold/silver/ bronze.
Forum: GT40 Tech - Exterior, Interior, AC, & Trim 25th October 2017, 01:49 AM
Replies: 24
Views: 4,566
Posted By jac mac
Re: Windshield interchange

Its a Corvair Screen in the Kellison, not really relevant to this thread.
Forum: GT40 Tech - Powertrain/Transaxles 22nd October 2017, 04:23 AM
Replies: 12
Views: 588
Posted By jac mac
Re: Reverse Rotation Automatic Transaxle. Planetary gearset?

Why not any Porsche 911 type transaxle, manual or Auto, its already orientated for what you want.
Forum: Lola T70 Lounge 15th October 2017, 08:00 PM
Replies: 9
Views: 563
Posted By jac mac
Re: Wheel Bearing Noise

Its an RCR, don't they use GM wheel brg assy's?, Two thrust type ball races side by side? if so it only takes one small flake of metal to make them run rough.
Forum: All GT40 13th October 2017, 05:41 PM
Replies: 25
Views: 2,792
Posted By jac mac
Re: SNAKEEYES joins GT40 forum !!

Poor guy will be banned if he ever comes back & doesn't follow rules!
Forum: Video and Pictures Buffet 28th September 2017, 01:39 AM
Replies: 9
Views: 827
Posted By jac mac
Wink Re: GT40 coming through the field

Plural of Goose, flock of Geese, not bad on plate at Xmas
Forum: GT40 Tech - Powertrain/Transaxles 27th September 2017, 05:31 PM
Replies: 5
Views: 409
Posted By jac mac
Re: Explain This Clutch/Transaxle Behavior

Don't think its the shaft contacting crank issue in this case- high RPM, is the clutch cover diaphragm the type with fingers that form a 'cone' toward release bearing, @ high RPM the centrifugal...
Forum: Site Questions, Suggestions, & Comments 22nd September 2017, 12:01 AM
Replies: 3
Views: 367
Posted By jac mac
Smile Re: Search

If you know their name, find it in the members list, open their 'about me' page, click in statistics, then posts or threads started, build thread should come up on threads started..
Forum: Original GT40s 21st September 2017, 04:41 PM
Replies: 41
Views: 3,772
Posted By jac mac
Forum: Original GT40s 18th September 2017, 03:49 PM
Replies: 3
Views: 609
Posted By jac mac
Re: Original flywheel and waterpump?

I have the clutch/flywheel one but it wont upload, PM your email & I will send it if nobody else can post it here.
Timing cover should probably be the early 221/260/289 one with provision for oil...
Forum: GT40 Tech - Engines/Induction/Exhaust 18th September 2017, 03:36 PM
Replies: 19
Views: 1,785
Posted By jac mac
Re: Flat Plane Crank Engine

Did you mean flat plane in that last sentence-or cross plane?
Forum: GT40 Tech - Powertrain/Transaxles 14th September 2017, 03:44 PM
Replies: 14
Views: 899
Posted By jac mac
Re: ZF 4th gear breakages

Given your statement above on driving habits I would suggest your problems are due to transaxle housing flex, essentially the housing is twisting lengthwise, this causes the gear pairs to load at...
Forum: GT40 Tech - Engines/Induction/Exhaust 14th September 2017, 02:45 AM
Replies: 31
Views: 1,740
Posted By jac mac
Re: 289 build recipe

My recipe for a 289:
289 crank ground to 2.100" on throws to match SBC rod brgs
5.7 SBC rods narrowed to Ford width @ big end full floating at SE ( I beam & liteweight)
Pistons with 1.070" pin...
Forum: GT40 Tech - Engines/Induction/Exhaust 13th September 2017, 11:01 PM
Replies: 31
Views: 1,740
Posted By jac mac
Re: 289 build recipe

Mikes running a 4bbl with the Le Mans cam, Apart from the alloy block & 302 crank his engine is essentially what your aiming for, a pair of AFR 185 heads are ~$1700 USD plus a bit more if you upgrade...
Forum: GT40 Tech - Engines/Induction/Exhaust 10th September 2017, 11:36 PM
Replies: 19
Views: 1,785
Posted By jac mac
Wink Re: Flat Plane Crank Engine

Yes, so Ive been told, bit of a rare breed though, an acquired taste according to those in the know!!! Couldn't keep pace with a plain jane pushrod crossplane back in the sixties...:)
Forum: GT40 Tech - Engines/Induction/Exhaust 10th September 2017, 06:31 AM
Replies: 19
Views: 1,785
Posted By jac mac
Re: Flat Plane Crank Engine

I've had similar thoughts ever since the first pics were shown of the crankshaft with full counterweights, If it was/is as good as the PR would have us believe there would be a lot more talk and...
Forum: GT40 Tech - Engines/Induction/Exhaust 9th September 2017, 11:41 PM
Replies: 19
Views: 1,785
Posted By jac mac
Re: Flat Plane Crank Engine

Fit the 180 exhaust system and that is what you get.
Forum: GT40 Tech - Engines/Induction/Exhaust 9th September 2017, 10:24 PM
Replies: 19
Views: 1,785
Posted By jac mac
Re: Flat Plane Crank Engine

Depends on your ability as an engine builder, 8400 while getting up there is not out of reach for a well built 289 with todays tech. Notice that all of the engine options are relatively short stroke....
Forum: GT40 Tech - Engines/Induction/Exhaust 9th September 2017, 09:40 PM
Replies: 19
Views: 1,785
Posted By jac mac
Re: Flat Plane Crank Engine

From pics it looks like the flat plane has just as much counterweight as the cross plane version, just distributed evenly along length of crank. Looks like an SLC in promos.
Forum: GT40 Tech - Fueling, Electrics, & Engine Cooling 9th September 2017, 06:16 PM
Replies: 5
Views: 374
Posted By jac mac
Re: Has anyone assembled these ht plugs?

Not sure about the white sleeve, however.. silicone spray 3" on end of lead, slide black boot onto lead until approx 1" of lead out of plug end, bend conductor core back over lead end and crimp...
Forum: Original GT40s 8th September 2017, 09:53 PM
Replies: 41
Views: 3,772
Posted By jac mac
Re: Ford GT40 Factory Blueprints Chassis plans from Ford Advanced Vehicles

Read post # 17, when these were offered for sale in the past we had a list of interested members prepared to buy a set & have the forum 'own' them or something to that effect, any interest in that...
Forum: Original GT40s 8th September 2017, 08:56 PM
Replies: 41
Views: 3,772
Posted By jac mac
Re: Ford GT40 Factory Blueprints Chassis plans from Ford Advanced Vehicles

You asking me? Might take a while ! When you consider the relatively low # of SPF cars sold to date I would think its well down on Dynacorns list of future projects.
Forum: Original GT40s 8th September 2017, 06:52 PM
Replies: 41
Views: 3,772
Posted By jac mac
Re: Ford GT40 Factory Blueprints Chassis plans from Ford Advanced Vehicles

Other than the Roof/Spider not really any larger 'panels' like that Scott, but many smaller parts that require hammer forms etc- if you have made formers for wing ribs and then made ribs from them...
Forum: GT40 Tech - Engines/Induction/Exhaust 7th September 2017, 11:21 PM
Replies: 7
Views: 407
Posted By jac mac
Re: Cylinder head inlet valve sizes

That was/is the 351 Cleveland, some of the later aussie 302c blocks which had 2.070" inlets did not have that notch and were handy to have when using longer rods and shorter ring stack height in...
Forum: GT40 Tech - Engines/Induction/Exhaust 7th September 2017, 04:45 PM
Replies: 7
Views: 407
Posted By jac mac
Re: Cylinder head inlet valve sizes

The inlet valve throat dia & mods are more critical than the inlet head dia, in fact simply fitting large inlet valves on a 4" bore engine can result in degraded flow due to masking effect of valve...
Forum: Original GT40s 6th September 2017, 10:13 PM
Replies: 41
Views: 3,772
Posted By jac mac
Re: Ford GT40 Factory Blueprints Chassis plans from Ford Advanced Vehicles

You need to wear a mask Ryan, your out to 306 cu in already, need a major rebore at this rate!!
Forum: GT40 Tech - Powertrain/Transaxles 6th September 2017, 04:43 PM
Replies: 23
Views: 988
Posted By jac mac
Re: 930 transaxle puking fluid?

It gets slung off the Ring Gear toward that vent anytime its fitted with mid engine/trans at rear in both standard & inverted applications, any difference would be the oil level which is usually...
Forum: GT40 Tech - Powertrain/Transaxles 6th September 2017, 04:12 AM
Replies: 23
Views: 988
Posted By jac mac
Re: 930 transaxle puking fluid?

Right, then you need to modify that fitting so that the hole or tube extending into the trans is pointed toward the right and forward. If you imagine the nose of car is North/tail South then it...
Forum: GT40 Tech - Powertrain/Transaxles 5th September 2017, 11:53 PM
Replies: 23
Views: 988
Posted By jac mac
Re: 930 transaxle puking fluid?

If its non - inverted & in your SLC then you must have flipped the Ring of the R&P to have correct direction in which case the lube getting thrown off R&P is likely to aim at that fitting... I assume...
Forum: GT40 Tech - Fueling, Electrics, & Engine Cooling 4th September 2017, 07:30 AM
Replies: 3
Views: 347
Posted By jac mac
Re: Rich and lean ....

With regard to setting the carb pad level, take a closer look at your Holley and you will find the fuel level sight screw plugs are slightly lower on front and higher on the rear float bowl to allow...
Forum: GT40 Tech - Engines/Induction/Exhaust 2nd September 2017, 04:21 PM
Replies: 31
Views: 1,740
Posted By jac mac
Re: 289 build recipe

5.0 Roller Lifters wont work in 289 block unless you use Deeper Dog Bones & spot face lifter bore ( top Side). Aftermart link bar type cannot be removed/fitted with heads on. Aftermart types may have...
Forum: GT40 Tech - Powertrain/Transaxles 1st September 2017, 01:58 AM
Replies: 14
Views: 664
Posted By jac mac
Re: digital Speedometer

You could always make a drive adapter for cable off front wheel, Hillman Imp was done like that, hole drilled thru stub axle and pin in dust cap to drive cable with plastic tang. LF wheel to get...
Forum: All GT40 22nd August 2017, 06:18 PM
Replies: 280
Views: 48,867
Posted By jac mac
Re: Something is missing

Sounds a bit like my driveway! That's why I have a Subaru road car! But I do have one Ford that will go anywhere I'm game to try... so far.
Forum: All GT40 22nd August 2017, 04:34 PM
Replies: 280
Views: 48,867
Posted By jac mac
Re: Something is missing

A 20 or 30 ft shipping container lined out with door cutout on side using exit heat from home would be a great storage option. You did say you were going to do a welding refresher course, that would...
Forum: GT40 Tech - Engines/Induction/Exhaust 20th August 2017, 11:52 PM
Replies: 25
Views: 1,769
Posted By jac mac
Re: Here's a loaded question: Which engine would be best for an RCR build?

Done a few, but wouldn't be my first choice for a GT40 as it just does not look right and the header face is pointing out n down @ 45. Quite frankly I wouldn't stuff around with stroking a 351...
Forum: The Paddock 18th August 2017, 11:50 PM
Replies: 1,956
Views: 125,752
Posted By jac mac
Smile Re: GT40s.com Paddock Politics Thread

There is no edit function in 'The Paddock', something you folk should bear in mind before hitting submit reply.
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