Mk1 Scirocco- light Blue

[Hydro]

Just to give you an idea of what it looked like [ Rough Idea ]
I have borrowed Mk1scirocco16T 's pic and photo shoped it to
what my Brother's looked like.

[Hydro]

Just wondering if could get some technical advice. I come from an air-cooled
background so .......For the older Mk1 1600 say...
1. How high compression
would you go before expecting it to Ping/Knock on Regular Unleaded.??

I thought that I read somewhere that standard was 7.8:1 [might be thinking of Beetle]
And should state - will be running port injection.
Glenn

[Hydro]

Found this on matey-matey.com/dis_2

The biggest structural alteration to the engine was the adoption of bowl-in-piston combustion chambers of a 'Heron' design (dish-headed piston crowns), which allowed the engineers to raise the compression ratio from 8.2:1 to 9.5:1. The inlet valves were enlarged, whilst the main and big end bearings were uprated to cope with the increased engine speeds. These changes raised the output of the engine from 75BHP to 110BHP at 6100rpm, and maximum torque was increased to 101lb ft at 5000 rpm. As the figures suggest, the new engine's peak power was produced at the top end of the rev-range, which coupled with the engines inherent eagerness to rev, forced the inclusion of a rev limiter with a cut-out set at 6900 rpm.

Following lengthy testing, an airdam was added under the bumper at the front of the car to improve stability at speed. To offset the subsequent reduction in airflow over the 'sump', an oilcooler was mounted to the side of the radiator. Placed directly in the air-stream, it helped reduce the higher oil temperatures of the newly tuned engine. Unlike the generation of similar cars that would soon follow in the GTI's footsteps, no other spoilers were fitted to the Golf. A variety of airdams and ailerons were tested, but were ultimately rejected as their marginal benefits were outweighed by their weight and detriment to the car's appearance. As demonstrated later, the prudence of this decision to keep the car subtle is undoubtedly a significant factor in the GTI's success.

With a resultant fifty-seven percent power increase over the standard 1600 Golf, Volkswagen's engineers wisely uprated the braking system. The solid front discs were replaced with ventilated items, whilst a larger servo was included to provide greater pedal assistance. For increased braking safety a load-proportioning valve was fitted to the rear suspension beam. The valve linked between the car and the suspension, directly apportioned rear braking effort according to load in the rear of the car. Under hard braking, the system would automatically lessen braking at the rear as the car began to dive at the nose, thus preventing premature and dangerous rear brake lock.
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I'll have to look at the GTI head to see what thats like.
I certainly need to improve the brakes.
Glenn.

[Golf Loon]

Only Mk1 GTI 1600cc engines are the heron ones. The engine you have is a 1600 cc non gti engine.

When is this car going to be driving?

[aliasmk2]

You are a lucky man hydro
These cars are my favourite VW
I have read somewhere that 16v version that came with bigger brakes & a 3' stright through exhaust, which gave it a better top speed than the porchse 911 of the day
Not to mention that it really looks the bussiness with the sleek lines it has

If you ever bother to sell it, I'm sure you would get a lot of attention

cheers Ian

[GoLfMan]

awesome stuff hydro !
economy over speed ohhh i dunno

[roccodingo]

You are a lucky man hydro
These cars are my favourite VW
I have read somewhere that 16v version that came with bigger brakes & a 3' stright through exhaust, which gave it a better top speed than the porchse 911 of the day
Not to mention that it really looks the bussiness with the sleek lines it has

If you ever bother to sell it, I'm sure you would get a lot of attention

cheers Ian

16 Valvers are the later body style ( scirocco2 ) still ,on the A1 platform tho.. same as Loons example.. never heard of the three foot exhaust tho..

[aliasmk2]

16 Valvers are the later body style ( scirocco2 ) still ,on the A1 platform tho.. same as Loons example.. never heard of the three foot exhaust tho..

Doh, I meant 3 inch exhaust

[bsting]

mk1 rocco is way cool good score!
I miss my one.

[Hydro]

Only Mk1 GTI 1600cc engines are the heron ones. The engine you have is a 1600 cc non gti engine.

When is this car going to be driving?

It wont be driving for some time yet.
Probably 3 months.
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So most likely mine has 8.2 : 1 compression.

- I will have Port Injection and standard cam...........

What could you take the compression ratio Up to that will still be able to
run on Unleaded [ regular 91 octane] but not Ping??
Glenn.