Search found 50 matches

by paulmanta
Tue Jan 31, 2012 6:46 pm
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: Tubular exhaust manifold, pairings of primaries.
Replies: 4
Views: 1596

Many thanks for the advice, I will probably go with the 15 37 28 46 configuration. I am undecided about primary lengths at the moment, I understand the fag packet rule of longer primaries give more torque so if this is true and not an old garage myth I want the make soemthing to get the best of both...
by paulmanta
Sat Jan 28, 2012 9:05 pm
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: Tubular exhaust manifold, pairings of primaries.
Replies: 4
Views: 1596

Tubular exhaust manifold, pairings of primaries.

I am fabricating my own exhaust manifolds, I am intending to make a system with 1 5/8 primaries, going 4 into 2 at two collectors, at the merge into 2 pipes the pipe will change into 2 inch pipe, then go past the bellhousing and then into a 2 into 1 merge, this merge will also go up to a 2 1/4 inch ...
by paulmanta
Sat Nov 12, 2011 7:11 pm
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: Offenhauser 360 on Rover V8. Wedge plate ?
Replies: 8
Views: 3771

Hi Alex,

Down in sunny penzance ! Car is in bits as we speak, in the garage but work has stalled due to brand new Baby taking all my time, hope to escape to do a bit more really soon though, cabin fever is setting in.
by paulmanta
Fri Nov 11, 2011 9:32 pm
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: Offenhauser 360 on Rover V8. Wedge plate ?
Replies: 8
Views: 3771

Oh yes, tuning on a rolling road is a hard to find skill in west Cornwall, I have been to a couple of places but i want to be able to fiddle myself due to my control freak nature ! I did a lot of checking out of the FAST Ez-EFi kit before I bought it, I normally view items like this that promise eas...
by paulmanta
Fri Nov 11, 2011 6:49 pm
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: Offenhauser 360 on Rover V8. Wedge plate ?
Replies: 8
Views: 3771

Some other points I forgot to add earlier. I don't want to clutter up my nice clean engine bay with bloody great big airboxes or pipes and mass airflow meters, i also like the look of the chrome airfilter sat on top of the engine. The injectors are below the throttle plates so loss of fuel/air suspe...
by paulmanta
Fri Nov 11, 2011 10:41 am
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: Offenhauser 360 on Rover V8. Wedge plate ?
Replies: 8
Views: 3771

Interesting points. I was running a 390 Holley for a while but did not really like it, it seemed to fall out of adjustment really easily and I was forever trying to get it to idle properly, also leaked frequently, It was suggested I try a 500 Edelbrock, this was a vast improvement but I had some tro...
by paulmanta
Tue Nov 08, 2011 3:42 pm
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: Offenhauser 360 on Rover V8. Wedge plate ?
Replies: 8
Views: 3771

Offenhauser 360 on Rover V8. Wedge plate ?

HI all, I am building an engine up to fit to the Manta, I have an Offenhauser 360 inlet manifold and a FAST Ez-EFi system, I was running an Edelbrock 500cfm carb so was also using a single large open hole style wedge plate to bring the carb horizontal. The Efi kit has no need of this wedge plate exc...
by paulmanta
Fri Oct 07, 2011 9:39 am
Forum: Drivetrain & Transmission Area
Topic: Gearbox ratios ?
Replies: 2
Views: 1524

Lovely !

That is exactly what I was looking for but my search skills failed me, or I missed it due to welding dust and old underseal in my eyes !

Many thanks. I combined that data with the very handy ratio calculator and now know which of the three CWP set I have here i should use.
by paulmanta
Wed Oct 05, 2011 3:24 pm
Forum: Drivetrain & Transmission Area
Topic: Gearbox ratios ?
Replies: 2
Views: 1524

Gearbox ratios ?

Hi All, I have a G22A SD1 3500 Police spec 5 speed LT77 box in my Manta, I have been mucking about altering the rear axle and I want to work out the best CWP ratio to use. Does anyone know what the ratios in this box are, I did do a little search on this topic but could not find out if the box is di...
by paulmanta
Tue Jun 07, 2011 10:16 am
Forum: Drivetrain & Transmission Area
Topic: SD1 Back axle overhaul.
Replies: 2
Views: 1528

Hi John,

Thanks for that, the picture is exactly what I was after in terms of tips !

I will have a bash at reshaping the crush ring then, hopefully It will be ok.

A link to that page would be great if it is not too much trouble.

Many thanks,
Paul
by paulmanta
Mon Jun 06, 2011 11:07 pm
Forum: Drivetrain & Transmission Area
Topic: SD1 Back axle overhaul.
Replies: 2
Views: 1528

SD1 Back axle overhaul.

Does anyone have any data on how to set up an SD1 back axle after a complete overhaul ? I am changing the diff bearings and the crown wheel and pinion and I could do with any tips, hints or OE data specs. I think there is a crush washer in there too, any ideas where I might get hold of one ? Rimmers...
by paulmanta
Sat Sep 04, 2010 11:55 pm
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: Laser cut ~RoverV8 manifold flanges.
Replies: 16
Views: 4115

I know the original plan was to do it myself but then i thought I would get prices for a good pro job, I will do an OK job, they ought to do a damn good job.

I am looking at both options right now.

The car is a 1986 Opel manta with a Rover V8 in it.
by paulmanta
Wed Sep 01, 2010 2:23 pm
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: Laser cut ~RoverV8 manifold flanges.
Replies: 16
Views: 4115

Well JP have given the price to make both the manifolds, its a bit more than I expected to be honest. £500 each plus the VaT. I had about £300 per side plus VaT in my head but I live in the sticks and normally do it all myself. Plus they need it for a week, so that means two 700 mile round trips for...
by paulmanta
Tue Aug 31, 2010 9:00 pm
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: Laser cut ~RoverV8 manifold flanges.
Replies: 16
Views: 4115

I have contacted JPexhausts about parts and maybe even doing the whole lot, depends on the price but its going to take me alot of faff, if my time plus faff plus parts equals more than them doing them plus faff getting the car to them then they get the job.

Should be interesting what they quote.
by paulmanta
Sun Aug 29, 2010 11:49 pm
Forum: Exhaust, Cylinder Heads, Fuel And Intake Area
Topic: Laser cut ~RoverV8 manifold flanges.
Replies: 16
Views: 4115

The thing is I am only 8 miles from Lands end In Cornwall and so have no idea who to ask or who is a good supplier for things. Hence my post here, as a general rule i have to make or figure most stuff out by myself. I only remembered this forum again recently. it was on my list of favorites years ag...

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