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Search: Posts Made By: jac mac
Forum: Wings, Wheels, and Keels Today, 12:58 AM
Replies: 601
Views: 107,360
Posted By jac mac
Re: M20 Dreaming

IIRC its not that simple, apparently 2oz might be per sq foot for csm & per yard for weave in USA whereas 225g is per sq meter everywhere else.
Forum: The SLC Clubhouse Yesterday, 09:14 PM
Replies: 63
Views: 1,205
Posted By jac mac
Re: SLC Hubs/ race worthy

0.31" is ~5/16" Howard, not 3.
Forum: GT40 Tech - Engines/Induction/Exhaust 14th April 2018, 08:59 PM
Replies: 28
Views: 1,199
Posted By jac mac
Re: Bundle of Snakes Advice

You need to remember 'original' GT40 used small dia flywheel & bellhousing, anything larger compromises that benefit of clearance in horse shoe, also 'original' were mounted off original block...
Forum: GT40 Build Logs 14th April 2018, 05:20 PM
Replies: 340
Views: 129,377
Posted By jac mac
Re: Dean's GT-R build thread

Deans engine is fore sale in 'The Garage Sale' forum ( P2 and labeled 'Coyote Engine), you can read about it and what caused the failure there. Dont ask me why he has not posted on build thread for...
Forum: GT40 Tech - Engines/Induction/Exhaust 13th April 2018, 11:26 PM
Replies: 28
Views: 1,199
Posted By jac mac
Re: Bundle of Snakes Advice

Kims engine is 363 cu in, Those headers appear to be stepped so at a guess with 2" tailpipes it would be 1.75"OD primary size at port. When I built the 346 in the TVR I was told it was going to be...
Forum: GT40 Tech - Engines/Induction/Exhaust 13th April 2018, 08:13 PM
Replies: 28
Views: 1,199
Posted By jac mac
Re: Bundle of Snakes Advice

HUGE difference between the alloy top link of horse shoe on Kim's vs Ricks car.
Forum: Wings, Wheels, and Keels 9th April 2018, 10:28 AM
Replies: 16
Views: 600
Posted By jac mac
Re: Gravity Racer, take II

I meant something like this Nick. Your twin wheel deal has similar problem to using very wide drag type rear tire on V8 bikes etc where leaning over in turn 'jacks' up riders effective seat height,...
Forum: Wings, Wheels, and Keels 9th April 2018, 04:42 AM
Replies: 16
Views: 600
Posted By jac mac
Re: Gravity Racer, take II

Its a BIG bucket! One of those situations where the line between being clever or very silly can get blurred! Have a mate out here who used to race go karts & was keen to build a frame where he was...
Forum: Wings, Wheels, and Keels 9th April 2018, 02:08 AM
Replies: 16
Views: 600
Posted By jac mac
Re: Gravity Racer, take II

Id run two rear wheels in tandem, but that might not fit the 'genuine 4 wheel wording!
Forum: GT40 Tech - Engines/Induction/Exhaust 8th April 2018, 08:38 PM
Replies: 28
Views: 1,199
Posted By jac mac
Re: Bundle of Snakes Advice

Dont see why the trans should be sitting high as porsche trans run input shaft below output driveshafts like ZF. I wonder if the header set you have were actually made for a 351w (1.280" higher deck...
Forum: GT40 Build Logs 6th April 2018, 03:41 AM
Replies: 155
Views: 60,537
Posted By jac mac
Re: Classic Car Developments Chassis #3

Arrows on drawing show what hot ( red ) and cooled (blue ) flow directions will try to do with that EWP setup you have there. To correct this the hose's from 5/8" fittings on T/Stat and bottom of...
Forum: GT40 Tech - Fueling, Electrics, & Engine Cooling 5th April 2018, 09:16 PM
Replies: 12
Views: 344
Posted By jac mac
Re: Faulty oil gauge?

Assuming SBF engine...Sender unit is found just in front of oil filter, or may be at end of short hose if original owner mounted it remotely from that oil gallery fitting. Sender will be about 2"+...
Forum: GT40 Build Logs 4th April 2018, 05:43 PM
Replies: 155
Views: 60,537
Posted By jac mac
Re: Classic Car Developments Chassis #3

When you use an EWP in conjunction with the modded OE pump housing like that you cannot use either of the 5/8" hose fittings on the OE pump housing as they are now under EWP pump flow direction and...
Forum: Superformance GT40s 28th March 2018, 05:52 PM
Replies: 12
Views: 607
Posted By jac mac
Re: Ground Clearance

Original prototype & Mk1 is 4.8", MK3 is 5.25", & MK2 is 3.9". So I guess you use what you choose, 'wisely' from day one.
Forum: Wings, Wheels, and Keels 26th March 2018, 04:37 PM
Replies: 229
Views: 39,635
Posted By jac mac
Re: McCopy mk 5

Try this, about 2.5" thick lengthwise installed in car, added a bit to the drawing to hopefully clarify..
Forum: RCR Forum - RCR40/SLC/917/Superlite Aero 11th March 2018, 06:09 PM
Replies: 12
Views: 1,185
Posted By jac mac
Re: My 917/10 is ALIVE!

Really cool Jack, just when I start to wonder if there are any real scratch builder types left in the USA you post a link to your videos, your comments on videos where you have had to sell/trade...
Forum: The World Market - Share Parts, Sources, and Reviews 6th March 2018, 10:20 PM
Replies: 1
Views: 93
Posted By jac mac
Re: Nos ford svo discontinued gt40 valves 1.940 - 1600 stock length ss swirl new

These are not genuine GT40 valves, the M prefix to part number suggests that they are later replacement Ford Motorsport items. GT40 valves part number had 'C' prefix, exh should be 1.625" dia and...
Forum: GT40 Tech - Engines/Induction/Exhaust 6th March 2018, 04:59 PM
Replies: 9
Views: 387
Posted By jac mac
Re: 351 Windsor ID ??

Tag on Dist is usually on one of the screws attaching vac advance can.
Forum: GT40 Tech - Engines/Induction/Exhaust 6th March 2018, 03:01 PM
Replies: 9
Views: 387
Posted By jac mac
Re: 351 Windsor ID ??

If it still has small alloy tags on dist, carb or perhaps alternator with a part # stamped on it that may narrow year of build vs cast date, assuming none of those parts were replaced, but not really...
Forum: GT40 Tech - Engines/Induction/Exhaust 6th March 2018, 02:41 AM
Replies: 48
Views: 2,098
Posted By jac mac
Re: 302 or 351W??? I'm driving myself nuts

Skip the power washer, too much risk of water in wrong place if your going to store it for a while
Forum: GT40 Tech - Engines/Induction/Exhaust 2nd March 2018, 02:39 PM
Replies: 15
Views: 1,032
Posted By jac mac
Wink Re: Premade BUNDLE OF SNAKES?

My thoughts as well, but wait, that's one of many things Ive done over the years! Hell I built the whole exhaust system on the TVR from scratch for a fraction of that, unfortunately NZ does not seem...
Forum: GT40 Tech - Engines/Induction/Exhaust 2nd March 2018, 05:37 AM
Replies: 8
Views: 968
Posted By jac mac
Re: max safe revs from a 302

Given the OP's original post any attempt to run it at 8k will require a large drip tray, probably sooner rather than later....
Forum: GT40 Tech - Engines/Induction/Exhaust 1st March 2018, 06:38 PM
Replies: 48
Views: 2,098
Posted By jac mac
Re: 302 or 351W??? I'm driving myself nuts

Don't be too concerned if you miss it, they are everywhere and common, As far as the block is concerned there is no difference between 2bbl & 4bbl and even the factory heads are same ( comp ratio is...
Forum: The Race Track 28th February 2018, 04:28 PM
Replies: 3
Views: 219
Posted By jac mac
Re: Canada/NZ TVR

Its a Dart Alloy block ( 4.125" Bore) with crank from 331 stroker & 185 AFR heads ~346 cu in, 4bbl, cam is a 1of to my specs & runs up to 7800 limiter ( conservative ).
Was meant to be 4" bore but a...
Forum: The Race Track 27th February 2018, 11:16 PM
Replies: 3
Views: 219
Posted By jac mac
Canada/NZ TVR

Thought some of you older members might enjoy an Up Date pic of the TVR, It has been running in Classic series for over 15 years now, 13 of those on the same engine & just finished this season with 8...
Forum: GT40 Tech - Engines/Induction/Exhaust 27th February 2018, 03:33 PM
Replies: 48
Views: 2,098
Posted By jac mac
Re: 302 or 351W??? I'm driving myself nuts

You really answered your own question, use a 351w old school, NO STROKER, IF you must spend money on it get a steel/forged crank with std 3.5" stroke, 6.125" rods from scat ( lightest they make ) and...
Forum: GT40 Tech - Engines/Induction/Exhaust 17th January 2018, 12:40 AM
Replies: 13
Views: 1,017
Posted By jac mac
Re: No 2 main failures

Being a bit frugal with info Frank.. Brg failure or block web or both. Then how many RPM, 50/28/ 0 or other balance factors, wet sump or dry, steel or iron crank, block year, balancer& flywheel...
Forum: Original GT40s 8th January 2018, 03:22 PM
Replies: 31
Views: 3,792
Posted By jac mac
Re: What chassis number is this car?

Interesting to see the owner of the Roadster in the HM article is 'Alan Watkins', is that the same 'Alan Watkins- User Resigned' who used to partake here on GT40's... IIRC he had an SPF, is his...
Forum: GT40 Tech - Engines/Induction/Exhaust 8th January 2018, 02:44 PM
Replies: 18
Views: 1,122
Posted By jac mac
Re: Ho 302 f1se

B=1950's, C=1960's, D=1970's, E=1980's, F=1990's,....
Forum: Original GT40s 8th January 2018, 05:23 AM
Replies: 31
Views: 3,792
Posted By jac mac
Re: What chassis number is this car?

Also the MKII built for a Kiwi customer was a combined effort from Pathfinder, SPF and HM for the Chris Amon continuation car. If nothing else a much more period correct car due to T44 & FE engine...
Forum: The Paddock 3rd January 2018, 09:45 PM
Replies: 72
Views: 3,348
Posted By jac mac
Wink Re: Why this forum is dissapperaring up its own anus?

Ha Ha, Since you have yet to do what I suggested your engine needed and you took the easy/cheap way out you don't know what your missing...yet!
Forum: The Paddock 3rd January 2018, 08:21 PM
Replies: 72
Views: 3,348
Posted By jac mac
Wink Re: Why this forum is dissapperaring up its own anus?

Hell No, I would have to post non-stop in the Paddock for 10 years just to even things up and by then I would likely have forgotten everything else I once knew...
Forum: GT40 Tech - Engines/Induction/Exhaust 1st January 2018, 04:08 PM
Replies: 2
Views: 441
Posted By jac mac
Re: Holley throttle pump daphram

No sealant reqd, check the pump cover is not distorted, warped, sheet of sandpaper on some flat glass or newish oilstone to get it flat, check the carb bowl surface for same and porosity in that...
Forum: Superformance GT40s 1st January 2018, 02:59 PM
Replies: 11
Views: 647
Posted By jac mac
Re: Ignition Switch?

Bought an old Triumph 2500S a while back, previous owner had fitted a battery cut off to back of cigarette lighter which he had gutted and fitted an adaptor to operate cutoff. Had to push n turn...
Forum: All GT40 1st January 2018, 02:36 PM
Replies: 16
Views: 3,287
Posted By jac mac
Re: CAV history -- the real story!

By your comment ' early noughties ' do you mean somewhere in 2000 thru 2009?, adding 'fat to the fire' remember the earlier RF operation was going to be moved to SA during this period, maybe some of...
Forum: GT40 Tech - Engines/Induction/Exhaust 31st December 2017, 10:24 PM
Replies: 18
Views: 1,122
Posted By jac mac
Re: Ho 302 f1se

Yes both C--- & D--- 351w blocks are the same- 2bolt main, all 1/2" dia bolts , same for head bolts. There are some minor casting differences you will notice if you look at a few, but they are...
Forum: GT40 Tech - Engines/Induction/Exhaust 31st December 2017, 06:54 PM
Replies: 18
Views: 1,122
Posted By jac mac
Re: Ho 302 f1se

Other than looking for any damage or reason for it being sold like run without oil or coolant, none really. I assume you would replace heads and intake with aftermarket alloy items and since crank,...
Forum: GT40 Tech - Engines/Induction/Exhaust 31st December 2017, 05:51 PM
Replies: 18
Views: 1,122
Posted By jac mac
Re: Ho 302 f1se

Howard, 351w is same length as 302, 289 etc, It may appear longer in GT40 engine bay due to rearward rake angle of firewall and obviously a bit taller & wider due to the 9.5" vs 8.2" deck height of...
Forum: GT40 Tech - Chassis,Brakes,Tires,&Wheels 31st December 2017, 03:53 PM
Replies: 19
Views: 787
Posted By jac mac
Re: GTD40 chassis # help please

Have you searched thru ' Faili F ' posts and or threads started in his stats for email contact, I just had a quick look and he has posts etc back to 2002
Forum: The Paddock 31st December 2017, 03:45 PM
Replies: 7
Views: 1,211
Posted By jac mac
Re: A conundrum

Activity fees.... oops Ive posted on the dreaded paddock
Forum: GT40 Tech - Engines/Induction/Exhaust 31st December 2017, 03:27 PM
Replies: 18
Views: 1,122
Posted By jac mac
Re: Ho 302 f1se

The 351w makes a lot of sense, those 49 extra cubes come a lot cheaper than a 331 or 347 stroker kit for a 302 and with a better rod ratio.
Only things to watch are your upper RPM limit with regard...
Forum: Wings, Wheels, and Keels 31st December 2017, 02:14 AM
Replies: 229
Views: 39,635
Posted By jac mac
Re: McCopy mk 5

JO's TVR has one muffler- two 3" in -one oval 5" x 3" outlet, got pinged for 96Dba @ Levels /Timaru @ full throttle /7800, Cut tailpipe & rotated 180 to point other way and added two >> shape...
Forum: Wings, Wheels, and Keels 30th December 2017, 05:22 PM
Replies: 229
Views: 39,635
Posted By jac mac
Re: McCopy mk 5

That's why I suggested a single muffler with an inlet & outlet on each end, more compact and does away with need for a balance pipe as the muffler 'can' performs that function.
Forum: The Paddock 30th December 2017, 03:34 PM
Replies: 72
Views: 3,348
Posted By jac mac
Re: Why this forum is dissapperaring up its own anus?

Never paid any supporters fees so don't feel I have much right to an opinion, but I'm with Dave, none of what I read in here these days has much value. Time the paddock was ploughed up for some fresh...
Forum: Wings, Wheels, and Keels 30th December 2017, 02:20 AM
Replies: 229
Views: 39,635
Posted By jac mac
Re: McCopy mk 5

Back in post #172... are you going to have mufflers straight on collectors or cross them from L to R over the T/Axle to get some length?
Forum: Wings, Wheels, and Keels 29th December 2017, 09:23 PM
Replies: 229
Views: 39,635
Posted By jac mac
Re: McCopy mk 5

Yep, post #180 Russell, as to the sound the larger the balance pipe dia the more it will diminish the V8 rumble. Tends to make a more sophisticated sound for want of a better explanation, Id have...
Forum: Wings, Wheels, and Keels 29th December 2017, 03:26 AM
Replies: 229
Views: 39,635
Posted By jac mac
Re: McCopy mk 5

Google is your friend
Forum: Wings, Wheels, and Keels 29th December 2017, 01:35 AM
Replies: 229
Views: 39,635
Posted By jac mac
Re: McCopy mk 5

If its one big muffler with left bank going in LH & exit RH & right bank in RH & exit LH there will be no need for balance pipe. Oop's, I see you said mufflers, are they 'Coby' type with expansion...
Forum: GT40 Tech - Engines/Induction/Exhaust 27th December 2017, 02:47 PM
Replies: 12
Views: 649
Posted By jac mac
Re: Ford windsor/cleveland length?

A V6 should be 120 Vee to get even firing & intake pulses and use simple common pin crankshaft design, anything else adds weight and compromise. The Buick deal had the same issues as the Ford... mix...
Forum: GT40 Tech - Engines/Induction/Exhaust 27th December 2017, 01:32 PM
Replies: 12
Views: 649
Posted By jac mac
Re: Ford windsor/cleveland length?

'1990' SVO catalog..M-6302-A380 Crankshaft- semi finished- common pin. All the reqd part #'s as well, cam blanks, iron block, heads, odd fire armature plus cap/ CD ignition pack.

Pic is from a guy...
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