Anyone Running The Uprated Oem Ecu In A Proper Gr.a Spec 1.9 ?

[Eagle1903 0]

Dear Friends,

I am a new to the forum and also the 205 scene. I/we are mainly working/preparing historic spec Escorts, etc, so I am experienced in certain level of engine building. However, this new project has lots of grey areas for me which I need help.

The car in question is a 205 GTI 1.9 which had a proper Gr.A engine once upon a time. In fact, if I can identify the parts ( ECU and the camshaft ( no markings ) ) then I can progress with this build, but currently I can only say that the head has been professionally worked ( probably Peugeot sport item ) and the chamber is 28 cc. I have not mapped the cam yet but it certainly has more lift than the standard item. As there is no markings on the cam, I can not say that it is one of the proper Gr.A Peugeot Sport cam profiles.

Prior to dismantling, the engine was in the car and running but I can not also identify if the ECU is internally modified to run with that cam, CR, and the cam profile.

I am planning a full rebuild with steel rods and Wossner pistons but obviously without knowing the cam and the ecu I can not configure the engine, ie.CR. The owner of the car who is my friend likes the car to be restored as it was in the homologated proper Gr.A form. The actual ecu, etc.

I would very much appreciate your comments on this project.

Regards,

Kerem

[welshpug 1,661]

camshaft markings are typically on the end under the pulley.

 

I'd suggest a better piston than Wossner.

 

 

 

PSC UK may have the documents.

[Eagle1903 0]

Hello Welshpug,

Thank you very much for your reply.

Unfortunately, strange but there are not any markings on the cams.

I will register to PSC as well. Would you suggest another piston which would also fit to std rods or could be matched to quality steel rods ?

Regards

[petert 589]

I use to own a 205 with a Gpr A spec. engine. I've got no idea who built it, but the ECU had three or four different resistors, compared to a stock ECU. I ended up tossing it and fitting modern management, as it ran like a dog.

[Eagle1903 0]

Hello Peter,

Exactly, that was the modifications to the standart ECU to use those days on the proper Gr.A car. Somehow, that ECU served to that engine with significantly raised CR and competition camshafts. But, the problem is, today I need someone to help me on that ECU and the related engine parameters like the CR and the camshaft etc.

Thanks very much

[petert 589]

I know about the camshaft, timing, CR etc., but I'm not sure I recorded the values of the resistors. I'll search.

[Eagle1903 0]

Hello Peter,

That would be very very good to know about the Gr.A's camshaft, timing, CR, valve sizes etc and all the relevant information which I will need during the build. I would very much appreciate if you can find those information. At least, many many thanks for looking.

Do you remember if the real Gr.A engine was built with Forged pistons or cast pistons ? And what about the conrods, were they steel or the standard items ?

I am planning to use standard lightened and polished rods with ARP bolts.

Regards,

Kerem

[petert 589]

Group A cam was 251 deg. @ 0.050" lift and 0.465" max lift. I think advertised duration was around 295 deg. Needs to be on a 106 deg centreline. It had double valve springs. Valves were big, 43/34.5mm from memory. I think mine was much modified as it had Mahle forged pistons with a slight crown and bushed standard rods. I can't find any info on the ECU.

[Eagle1903 0]

Hello Peter,

Thank you very much.

I will have to measure ( map ) the camshaft in a dummy build engine to check these timing events I guess. Our valves are 41.60 / 34.50 mm. Are they standart you think ? Because the head seemed nicely worked on ports etc.

The camshaft has a kind of marking on its pulley face with a kind of emblem/logo and a number 37. I do not know if it rings a bell ?

Regards,

Kerem