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4Age - Max Speed?
snippy - 28/8/18 at 09:17 AM

Just started filling out my IVA forms and it asks for the Max speed of my 4age engine. What have others quoted who have IVA`d with a 4age 1600? I was thinking around the 110 to 115 mph mark?

russbost - 28/8/18 at 12:18 PM

I usually put 119mph as it's the cut off for one of the tyre speed letters, that's the only reason they ask for a max design speed I believe

pekwah1 - 28/8/18 at 12:19 PM

i believe they're asking for max speed of the car, cant remember what i put on mine, somewhere around 120-130 if memory serves, just make sure that whatever you put, your tyres are rated for at least this speed, it's one of the checks!

mcerd1 - 28/8/18 at 09:47 PM

quote:
Originally posted by pekwah1
i believe they're asking for max speed of the car, cant remember what i put on mine, somewhere around 120-130 if memory serves, just make sure that whatever you put, your tyres are rated for at least this speed, it's one of the checks!


and that the speedo can read that high...

snapper - 29/8/18 at 05:39 AM

quote:
Originally posted by mcerd1
quote:
Originally posted by pekwah1
i believe they're asking for max speed of the car, cant remember what i put on mine, somewhere around 120-130 if memory serves, just make sure that whatever you put, your tyres are rated for at least this speed, it's one of the checks!


and that the speedo can read that high...


They only test speedo to 70mph
Max car speed is for tyres only
Max engine RPM is only for exhaust noise test

These are some of the things we can be cautious with as over stating these parameters can cause trouble at the test if we get all pub bragging about our 200mph kit cars that rev to 10k ( unless it’s bike powered)

GonzoRacer - 29/8/18 at 11:31 AM

A pilot friend of mine says that a Cessna 152 only flies "just barely fast enough to kill you." Same might be true of our cars.

However, I doubt the folks reading your answers would appreciate the humor of that remark if you wrote it on your form.

Good luck!

mcerd1 - 29/8/18 at 03:55 PM

quote:
Originally posted by snapper
They only test speedo to 70mph
Max car speed is for tyres only.......


this is the bit I was referring to:

quote:
IVA M1 inspection manual - Section 17
Required Standard
2. A speedometer must be capable of indicating the vehicle speed in miles per hour (mph) at uniform intervals not exceeding 20mph for all speeds up to the maximum design speed of the vehicle. (see Note 2.)

Note 2. It is acceptable if the maximum speed of the vehicle is indicated by the last increment on the speedometer which must not be more than 19mph beyond the last 20mph increment.

russbost - 29/8/18 at 04:46 PM

Yes, they only actually test speedo to 70mph, but if you put down 190 as max speed then you need to be able to show it's capable of displaying 190

snippy - 6/9/18 at 09:51 PM

Thanks for the replies all. The mk1 MR2 had a top speed of 119 mph so I think i`m gonna go with this. My tyres are V rated so I`m well under that figure anyway.