cams, head work, or high compression pistons?

[So Cal Mark]

we've dyno'ed several cars with our header/exhaust. They've all shown peak hp increase of 10%, and 15% increase at 6000rpm, peak torque increase of 15% with a flat torque curve from 3500rpm to over 6000rpm

[RoyBatty]

if you are looking for more than just motor performance. I highly recommend a rear sway bar

Same here!

[valkyrcustoms]

Thanks azruss and roybatty. I actually will be ordering a rear sway bar mid May. Would a 1" sway bar up front be necessary or even recommended for a car that will primarily be street driven.

[azruss]

I left my front sway bar alone and the car is very neutral in the corners. I resprung my car using 71 springs. If you have tall springs from the later models, you may want to think about getting that tail down to where it belongs.

[valkyrcustoms]

I don't know if they are tall springs or not, but since I removed those unsightly bumpers it looks more like a monster truck than a small sports convertible. So I'm looking for a set of springs to bring her back down from the clouds. Any suggestions on springs? Progressive? Earlier OEM?

[RoyBatty]

The rear bar addition will help to keep the front end from plowing.
Adding a larger front bar may shift you back toward what you had before the addition of the rear, but with less body roll.
Try just adding the rear bar first.

[vandor]

The rear bar addition will help to keep the front end from plowing.
Adding a larger front bar may shift you back toward what you had before the addition of the rear, but with less body roll.

In theory yes, but my Spider with the large bar up front and a rear bar is quite neutral. My previous Spider with the same setup was a lot more tail happy, to the point I had to downsize the rear swaybar - so not all Spiders are the same.

> Try just adding the rear bar first.

Yes, always add a rear bar first.

[narfire]

So I'm looking for a set of springs to bring her back down from the clouds. Any suggestions on springs? Progressive? Earlier OEM?

Years ago I put a set of IAP red springs(un-cut) on with the KYB shocks. OK but still looked like a jacked up truck.
Swapped to the Koni yellows and the car came down and handles Soooo much better. I have the 1" front bar and 205 15 tires which help as well. I like the idea of a rear bar as I don't track but the road to town here is nice and twist. AR and Mark sell I believe great springs for our cars.
In my opinion the Koni's really made an improvement in my car.

[toplessexpat]

I doubled up my rear trailing arms to tighten the rear end a little on the 1800. Drives great.

[valkyrcustoms]

Topless, pardon my ignorance but can you tell me what you mean by "doubled up"?

[toplessexpat]

Got longer bolts, and fitted two trailing arms each side. The additional one goes inboard of the existing.

[AlessioDF]

That's my work....Engine almost ready to run. 0km !! It's a 1756cc Fiat 132AB1A0 Block from a '72 Fiat 124 Sport Coupè 1800

1) 5936188 Lancia VX Head, big valves (43,5x36,5). Sodium Cooled Ex valves!
2) 8mm dome pistons (10,5:1/10,6:1 CR) 84,60mm
3) BC1/BS61 Cams (26/66 - 272°- 9,54mm lift)
4) Ported Intake and outake
5) Free-flow exhaust
6) Free-flow intake
7) Weber 38 ADLD2 150 Carb (Lancia Gamma 2.5) automatic starter (water choke)
Single Plane (bigger ports) Fiat Argenta 120i intake manifold
9) Electric Starter

The Question is: how many horsepower? Does anyone know something? I think almost 20+...

[valkyrcustoms]

Nice work alessio. I may have to do something like that in the future. But I'll be looking to build a separate block so I don't spend too much down time while building it up.

[AlessioDF]

Nice work alessio. I may have to do something like that in the future. But I'll be looking to build a separate block so I don't spend too much down time while building it up.

Thanks a lot my friend!
It's a fun for me...but it's the very first time for this engine for a job like that...

I really hope that everything may run nice...my next mod will be dual 40's Weber....

[vandor]

Hi,

It all looks very nice!

> 8mm dome pistons (10,5:1/10,6:1 CR) 84,60mm

8mm dome pistons are more like 10:8-11:1 CR. Did you measure all the volumes to see what the actual CR will be?
Or does the VX head have larger combustion chambers?

> 3) BC1/BS61 Cams (26/66 - 272°- 9,54mm lift)

You probably know what those cams were the same as in later models, but Fiat changed the valve clearance for cam timing measurement purposes, so on paper it seems like later cams are much weaker.

Single Plane (bigger ports) Fiat Argenta 120i intake manifold

Argenta 120ie was fuel injected, so it's likely from Argenta 110.