3428TM Build Log

3428TM Build Log

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Discussion

Slow M

Original Poster:

2,753 posts

209 months

Tuesday 29th November 2011
quotequote all
ivanhoew said:
hi bernard ,

i think for the 7.2k limit ,that that cam makes sense ,although i had assumed it was a flat tappet cam ,being a roller , i feel a bit of porting on the heads and a softer cam in the 225 to 230 range would be a nicer street compromise .it looks like your model is topping out earlier than you hope the real life one would ,carefull measuring of all the friction areas can drop the losses perhaps ?

i still do a bit of cam design on my own cars ,bernard , my 1312cc turbo mini at 248 bhp uses one of my designs ,ran a 13.26 1/4 @ 112.1 mph and took 2nd fastest 5 port at last years drag shootout ,and 3rd fastest this year ,on open diff and falken tyes ,and weighing about 70 kg more than the other cars .

my biggest cam fun ,was a 1927 8 litre vintage bentley ,i did the computer analysis of the engine for the customer ,then designed the exhaust and inlet dimensions and then went and had fun building the engine ,it put out 325 bhp which was about 3 bhp different to the model ,

i then designed a cam for it and special high ratio rockers ,using about 3 different cam design programs ,and a fair bit of experience ,this on its first dyno pull went to 488 bhp ,and after a bit of tuning topped at 511 bhp 720 lbs/ft ,still climbing at 4800 rpm ,but the builder of the car and the various owners and observers felt that was enough lol. i think 600 would have been on the cards with more revs ,but it was very long stroke .
this went on to set fastest v benley on the standing km , i think it was 23.1 s ? crossing the line at 155 mph , I tHINK , i may be wrong on the nos. not bad ...it weighed 3950 lbs !! on little bycicle tyres and spoked wheels .

re book shops , i went to a autobooks shop south of van last year i think ,we where looking at mini books for my partner who has a jan 1960 mini over here . i wonder if it was the same shop.

regards
robert

Edited by ivanhoew on Monday 28th November 08:16
Robert,

It sounds as though the Bentley would feel like a steam train. Good fun! Your Mini sounds like it must be a euphoria delivery machine as well. Opposite ends of the spectrum, aren't they?! I met a fellow TVR enthusiast here in Seattle, who "invented" the BMW DOHC cylinder head conversion for BMC A series engines. He gave me a guided tour, on his prototype, of some of the work he had to do to make that work, and it speaks volumes for his determination. His 2500M is looking pretty spectacular as well.

My brother is my engine guru. That's a nice thing to have in the family. I've learned more from him, than from any other source. He's currently working on sucking more power from the 121 cubic inch (1983cc) Merch (Harley clone) motor that he's already had at 176HP, and on parts selection for his '78 Porsche 930 engine (3.4 or 3.6l?), that he's trying to push to 1,000HP. One thing that seems to have moved forward, over the past few years, is the art/science of turbocharger impeller wheel vane design. Apparently, the Honda drag racers are doing some wonderful things. For the Harley clone, he's looking for the fattest power curve, but for the Porsche, it's about max power, and Vmax.

I tried to get in touch with him about your suggestions, but haven't been able to so far. Sometimes it's a bit strange, and alienating to be in the Westernmost time zone in the Americas.

Was the book shop you went to in Canada, then it might have been Wilkinson's; we do some business with them. I work at books4cars, right here, in sunny Seattle.

Best,
B.

ivanhoew

996 posts

244 months

Tuesday 29th November 2011
quotequote all
hi bernard ,yes that bentley was amusung , it would only take full throttle halfway through 4th gear without spinning up .

i also invented (sic) a 16v mini head conversion ,you can see it running in my youtube channel ,

http://www.youtube.com/user/legrandphromage

its a fiat punto head .

we go to the seattle museum of flight almost every visit ,so if we do , i'll certainly call in .


regards
robert

Edited by ivanhoew on Tuesday 29th November 09:47

Slow M

Original Poster:

2,753 posts

209 months

Thursday 1st December 2011
quotequote all
DRY SUMP TANK

My pre-fab, three gallon(US) tank as purchased:

The first trial fit of said tank:

Which was followed by me spending the next few minutes laughing at myself. The recognition that it wouldn't work without some modifications came rather quickly. Subsequent attempts at logic looked like this:

If you want to fit a dry sump tank into the passenger side foot well, it could look something like this:


The top of the foot well cants in at approximately 2 1/2" as a result of TVR making a tub that would work for the home market, and areas where the cars would be sold in left hand drive configuration. (see below)

As I need the full 6" depth of the tank, at the top, in order to incorporate the Oberg style filter, I believe I'll be cutting the tank as well as the foot well. The additional loss of passenger legroom isn't worth leaving the body well enough unmolested.

Best,
B.

stainless_steve

6,034 posts

261 months

Wednesday 7th December 2011
quotequote all
Don't know how i missed this thread Bernard,keep up the good work and it's nice to see you have been into TVR's a long time.

Slow M

Original Poster:

2,753 posts

209 months

Thursday 8th December 2011
quotequote all
Thanks Steve, I feel a spending hiatus coming on. I did pick up a snowboard, and there are gorgeous slopes an hour and a half from me. None the less, here are two recent acquisitions.

Oil cooler bypass valve


Oil filter adapter


I may get a lift-TIG rig, to perform the modifications to the dry sump tank, and to build the exhaust. What do you think of these? http://www.ebay.com/itm/THERMAL-ARC-95-S-TIG-STICK...

Best,
B.

Edited by Slow M on Thursday 8th December 07:42

Seabass

193 posts

202 months

Thursday 8th December 2011
quotequote all
The link you posted is a DC only TIG ie Steel and it's alloys only generally. You'll need to get an AC/DC - AC being used for aluminium to lift the oxide on each cycle. Chinese units are much of a muchness but cheap - try and get one with AC frequency control which is useful for aluminium. If you can afford it buy American or Italian!

Cheers JC

stainless_steve

6,034 posts

261 months

Thursday 8th December 2011
quotequote all
It's cheap tat Bernard,looking at £1000 for a ac/dc set,unless you want to do ally welding i would just take it to your nearest sheet metal shop.

Adrian@

4,357 posts

285 months

Thursday 8th December 2011
quotequote all
For a TIG set to look for, then, this sort of capacitor bank unit....(trust me that you do not buy this make at this price) BUT this is a recent copy/version of the Fimer/Star (list out TIG 160) unit (look for a second hand one).
http://weldinginverters.co.uk/sip.php
I have had the Tigstar 160 for too long (in a good way...1 capacitor failure in 20 years) granted, I now match it with a Parweld Ergo Tig ER26 torch with momentary and pot (which gives you hand controls instead of hand and foot) which recently cost me the price I paid for the welder 20 plus years years ago.
Adrian@

Slow M

Original Poster:

2,753 posts

209 months

Friday 9th December 2011
quotequote all
Thanks a lot for your responses!

It's off to the local machinist's I go. From what I've heard, they do nice work.

Best,
B.

jellison

12,803 posts

280 months

Friday 16th December 2011
quotequote all
Just seen this (pics from page 1 not working Bernard).

Useful power number smile ! Those on the engine dyno or rolling road?

Slow M

Original Poster:

2,753 posts

209 months

Friday 16th December 2011
quotequote all
Jelli,

The pictures are loading for me.

My "dyno charts" are computer generated estimates from "Engine Analyzer Plus V3.2" software.

The one in Nov 27th post is from D. Vizard, and was on the engine dyno (not my motor, but close). They found a lot of power in tuning the exhaust secondary length. Click the links in that post for more info.

Best,
B.

jellison

12,803 posts

280 months

Friday 16th December 2011
quotequote all
Slow M said:
Jelli,

The pictures are loading for me.

My "dyno charts" are computer generated estimates from "Engine Analyzer Plus V3.2" software.

The one in Nov 27th post is from D. Vizard, and was on the engine dyno (not my motor, but close). They found a lot of power in tuning the exhaust secondary length. Click the links in that post for more info.

Best,
B.
Aha - computer estimates. Not heard of that. Mine was on the dyno before shipped (Daft numbers smile). I looked at AFD heads, in the end I liked the looks of AFR's.

Those wheels and tyres are huge! You should not have grip issue unlike me!

Silly power and limited to 225/60x15 Yokos 032's!!

Mine come along - if you drop me a mail I'll fire you the latest.

Good work wink

Slow M

Original Poster:

2,753 posts

209 months

Saturday 17th December 2011
quotequote all
jellison said:
ha - computer estimates. Not heard of that. Mine was on the dyno before shipped (Daft numbers smile). I looked at AFD heads, in the end I liked the looks of AFR's.

Those wheels and tyres are huge! You should not have grip issue unlike me!

Silly power and limited to 225/60x15 Yokos 032's!!

Mine come along - if you drop me a mail I'll fire you the latest.

Good work wink
Thanks. The program extrapolates from known data points and, supposedly, is very accurate. Much faster/cheaper than testing or building a dozen variants in real life, before you're happy.

You have mail.

Best,
B.

jellison

12,803 posts

280 months

Monday 19th December 2011
quotequote all
Slow M said:
jellison said:
ha - computer estimates. Not heard of that. Mine was on the dyno before shipped (Daft numbers smile). I looked at AFD heads, in the end I liked the looks of AFR's.

Those wheels and tyres are huge! You should not have grip issue unlike me!

Silly power and limited to 225/60x15 Yokos 032's!!

Mine come along - if you drop me a mail I'll fire you the latest.

Good work wink
Thanks. The program extrapolates from known data points and, supposedly, is very accurate. Much faster/cheaper than testing or building a dozen variants in real life, before you're happy.

You have mail.

Best,
B.
Replied - be interesting to see how the finished lump compares to the predictions.

Slow M

Original Poster:

2,753 posts

209 months

Monday 20th August 2012
quotequote all
Updates:

The driveshaft and axle assemblies are ordered and scheduled for manufacture, at http://www.driveshaftshop.com/, and they've been a pleasure to work with.

The dashboard surround took a real effort to foam and reupholster. It was much more difficult than I'd anticipated, but I'm quite happy with the result.

Another, is that the replacement of the pedal box is under way.

TVR_owner’s help with good pictures made the parts selection process a lot easier. Lots of thanks, John.

In addition, there are wires sprawled all over the vicinity of the car, looking like some kind of sea monster, out of a Jules Verne story.

Best,
B.

ivanhoew

996 posts

244 months

Tuesday 21st August 2012
quotequote all
nice pedal box ,seems to be atracting a zombie though ?

jellison

12,803 posts

280 months

Tuesday 21st August 2012
quotequote all
Very nicely done dash (Same tach as I have used).

Those pedal ar upside down (hopefully), not floor mounted ala Sag's / Bugs (never got on with those).

TVR_owner

3,349 posts

194 months

Tuesday 21st August 2012
quotequote all
jellison said:
Very nicely done dash (Same tach as I have used).

Those pedal ar upside down (hopefully), not floor mounted ala Sag's / Bugs (never got on with those).
Less leg movement required to drive the car. If your legs are tight under the steering wheel, these will make all the difference.

Fitted similar in my M, biggest ergonomic improvemnt to the car.

jellison

12,803 posts

280 months

Tuesday 21st August 2012
quotequote all
Tight on legs!

Do you play rugby (huge legs) or have a big wheel smile

TVR_owner

3,349 posts

194 months

Tuesday 21st August 2012
quotequote all
jellison said:
Tight on legs!

Do you play rugby (huge legs) or have a big wheel smile
6 ft 2" not huge legs, small flat bottomed wheel. Not room under the wheel to move legs around quickly, and it's a lot of wasted movement with the original set-up. smile


Edited by TVR_owner on Tuesday 21st August 12:52