Search found 97 matches

by conrod
Sun May 25, 2014 9:57 pm
Forum: Drivetrain & Transmission Area
Topic: Can anyone help ID this LDV Part Number on LT77?
Replies: 3
Views: 2853

ratios depend on whether it came out of a V8, or diesel. They are as follows: Diesel 1st 3.985 2nd 2.519 3rd 1.507 4th 1.000 5th 0.931 V8 1st 3.321 2nd 2.131 3rd 1.396 4th 1.000 5th 0.770 (can also be 0.79) Best you mark it up and manually count the turns and work out what you have. LDV call it a R5...
by conrod
Sat May 17, 2014 8:54 pm
Forum: Electrical & Ignition Area
Topic: Hi-torque starter.
Replies: 7
Views: 2014

yep thats right about sprag clutch not slipping, it just works or "freewheels" in one direction. Next time you have a starter at hand, notice how you can push the pinion in one direction (and the shaft does not rotate) but not the other, that is the sprag clutch. It has rollers inside, similar to a ...
by conrod
Sat May 17, 2014 5:28 pm
Forum: Electrical & Ignition Area
Topic: Hi-torque starter.
Replies: 7
Views: 2014

The clutch is only supposed to slip in one direction, the purpose of it is to prevent the starter from overspeeding (and flying apart) when the engine fires up. As you can imagine, the gearing of the ring gear to the pinion is typically around 12:1, when the engine fires up at say 1000rpm, if the st...
by conrod
Sat May 17, 2014 10:11 am
Forum: Electrical & Ignition Area
Topic: Hi-torque starter.
Replies: 7
Views: 2014

Dave, the starter is actually engaging the ring gear. the problem is the sprag clutch is slipping. You will need to remove the starter and replace the clutch drive (the bit with the pinion on it) You can usually get these to start by holding the ignition in start for 10-20 seconds. the clutch drive ...
by conrod
Thu Aug 01, 2013 8:42 am
Forum: Engines Area
Topic: Flat plane crank - Cam
Replies: 27
Views: 12236

I don't think it is the flat crank that allows these engines to shift gear at 7500. Every component in the engine must be able to support higher rpm, rods, pistons, rockers, cam, manifolds etc. They will be quicker than you if they are using higher rpm and a shorter diff ratio, as the torque multipl...
by conrod
Wed Jul 31, 2013 8:05 pm
Forum: Engines Area
Topic: Flat plane crank - Cam
Replies: 27
Views: 12236

My understanding about flat plane cranks is that there CAN be a power advantage, but it is not a big one. It comes about because exhaust headers can be made like 4 cylinder ones (ie. 4-1 headers on each side) and because of the even exhaust pulse interval (due to the flat crank design) exhaust scave...
by conrod
Tue Apr 30, 2013 9:52 am
Forum: Engines Area
Topic: can 4.6 block be rebored?
Replies: 15
Views: 7775

4 litre piston dish is 13,2 cc and 4,6 litre piston is 22,3 cc. Piston swap would bring the CR up about one whole point i.e. from 9,35 to 10,3. Most likely a bit less but can´t remember exactly. awesome, just what I was looking for! :D by my calcs. that will give a CR of 10.66:1 when 4.0 piston is ...
by conrod
Tue Apr 30, 2013 8:36 am
Forum: Engines Area
Topic: can 4.6 block be rebored?
Replies: 15
Views: 7775

thanks for the replies guys, I will probably go with Real Steel, and get one of their camshaft kits while I am at it. :D I do understand why LR do not recommend reboring, and know it is a risk, but am prepared to give it a crack (bad choice of words I suppose!) Does anyone know the volume of the dis...
by conrod
Mon Apr 29, 2013 4:15 pm
Forum: Engines Area
Topic: can 4.6 block be rebored?
Replies: 15
Views: 7775

thanks Mike, good to know:) I will try to find some oversize pistons.

cheers Conrad
by conrod
Mon Apr 29, 2013 10:24 am
Forum: Engines Area
Topic: can 4.6 block be rebored?
Replies: 15
Views: 7775

can 4.6 block be rebored?

I have a 4.6 engine that I am rebuilding to put in my race car tow vehicle (LDV van). We have measured the block, and found it has too much wear to hone and re- ring. This means either a rebore to first oversize, or a new set of liners and back to std size. As it is on the std bore this would mean f...
by conrod
Thu Apr 11, 2013 8:54 pm
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: Thread Question
Replies: 11
Views: 4151

Pretty sure those air temp. sensors in your pic have a tapered pipe thread (3/8 NPT I think?) meaning you cannot get a nut to suit:(
by conrod
Fri Mar 29, 2013 4:44 pm
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: Merlin Heads
Replies: 424
Views: 183565

Wildcat block, heads and manifold, and all internal parts custom. Probably no original Rover parts in there as you say. Still, plenty of "Ford" and "Chev" race engines that could claim the same too! :D
by conrod
Fri Mar 29, 2013 11:02 am
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: Merlin Heads
Replies: 424
Views: 183565

I see some talk of Carl Hansens TVR here. I have seen the car race on many occasions, and it is insanely fast, holding many outright lap records at NZ tracks. I can easily believe claims made that it is the most powerful N/A RV8 in the world. However, he has been rebuilding the car, and in its new c...
by conrod
Fri Mar 29, 2013 10:36 am
Forum: Electrical & Ignition Area
Topic: Tyco Superseal connectors
Replies: 7
Views: 1949

I have seen and used junior timer connectors in 2,3,4,5,6 and 7 pin wide, with rubber boots, and these do fit the superseal connectors, I have used them before. If you can't find a generic boot, try a Tyco (AMP) or Bosch supplier.
by conrod
Fri Mar 29, 2013 6:07 am
Forum: Electrical & Ignition Area
Topic: Tyco Superseal connectors
Replies: 7
Views: 1949

Hi Dave, not sure who in the UK would stock those, but they do fit and work on superseal connectors. You could try these guys, they may sell them separately: http://www.m-cal.com/Products/list/Connectors/Junior-Timer/ I use a piece of adhesive lined heatshrink on these connectors (or "stack" two pie...

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