I have three set of springs for my coupe, I belive the set that is in it are 200lb, I'm using the softest ones and they work well with the A series engine and 185/60 13 DOT race tires. For pure slicks they might be to soft but I tend to run cars softer than most. I'm willing to give up that instnt feed back stiff bars/springs/dampers give for a little more grip.

Tom

Yes, the Mazda B piston engine is a favorite engine for Datsun 1200 in South Africa.

Powerful for its size and weight. There are photos of wheelie-pulling examples in our photo album.

didn't wanna go down the same ca/sr route that everyone else does. also lack of strong narrow axles ment i didn't wanna go turbo. engine is a 1800cc vvt 7000rpm 150bhp. mx5, miata, enous?

I hear they have plenty of good Mazda engines in the UK.

Mazda engine in a Datsun proves how deprived of good engines they are in the UK !!!!.

By the look of things, 200lbs will be a good start, I'm lucky in the sense that we have a shop that runs a exchange program on springs, for a marginal fee he will swop springs if it isn't what you need.

i have 6 kgs hks springs with tokico pedigree S13 inserts, with a CA, worked well, wasn't a daily though

That sounds like the best of both worlds. Let us know how it works out, and what the ride height is with them installed.

OK everyone - I've just tried fitting kdfl-57s - and didn't - they are actually about 10-12mm shy of being 'captive' in a std 1200 coupe strut, meaning they are unroadworthy as is. I've contacted king, the option I asked about was the kdfl-17 which is basically the same rate as the 57 but longer extended length, and a similarly higher ride height. They informed me of another option - KHRL-115 - which should be even better, they are slightly lower than std ride height, but a long enough free length to be captive/safe, but beter still have a higher spring rate (the 57s or 17s are apparently 100 over 150, and the khrl-115s are 80 over 180. Very basically they are a progressive rate spring, that start out similar to stock (90lb/in) but once they compress about 1inch a coil or two come close to bottoming out, taking them out of the equation, and the rate goes up to 180.

SO they are still considerably soft compared to what people are running on competition cars, but close to double the rate of stock springs. I've had a lot of dramas with a local distributor (they took a good couple of months to get the springs delivered) so I'll let you know how I go as far as getting the khrl-115s as a changeover (the guy on king springs tech line was fantastic by the way, had all the info at hand, and indicated they had them in stock ready to ship if need be) and how quick they get them in. I'll let you guys know how they end up sitting/riding/handling when i get them on the darn car.

I run 8" free length 250lb front springs in mine with a 1" swaybar. The front end is really responsive but is way too stiff on the road to and from the track! This is with CA too.

Matching the rear end to suit is proving more difficult