Pete Mk1
31-12-2007, 07:39 PM
Please can anyone help??
Recently finished putting together my engine for my MK 1 Tarmac Rally Car. I should say my so called mechanic did. Basically what i had put together was a 2.0L bottom end from a 95 Mk3 combined with 1.8L head.
This head is a ported GTI head with Techtonics cam,twin 45 Webbers etc.
The 2.0L bottom end had new mains,hone and new rings (previously had about 110,000km's)
After the engine was tuned on dyno i finally went to pick up my car which seemed to be running well,sounding fantastic and on first impressions of driving it home, plenty of power and oodles of torque. My mechanic said that it was making 101hp at the wheels which in my book was fairly good for a light weight MK1.
Any way took car home and put in garage.
2 days later decided to take the golf out for its first run prior to competition.
Low and behold i only managed 60km before losing oil pressure. F%%&*
I got the mechanic to pick up car and diagnose.
When i arrived at work shop next day the engine was out and being disected!!
It turned out that the crankshaft had been ground away on the journals, not the bearing shells as you would expect, and whats more there was a piece of metal stuck on oil pump relief valve!! Major scoring throughout the engine.
End result the engine is totally stuffed.
Cost wise it is too expensive too rebuild so maybe start with another engine altogether.
Don't reailly know the answer so if anyone can help with any info on this mod i would really really appreciate help with my dilemma.
How this or why this happened is a mystery to me and apparently to my mechanic also.
Has anyone experienced malfunctions or any problems in fitting 1.8 head to 2.0L bottom end???
If so what and why???
Does anyone know if there are inherent problems in carrying out this modification???
Are there any oil pressure,flow problems associated with the fitting
1.8 head to 2.0l bottom????
Your help would be majorly appreciated.
Thanks
Pete Mk1
PS
Happy New Year
Recently finished putting together my engine for my MK 1 Tarmac Rally Car. I should say my so called mechanic did. Basically what i had put together was a 2.0L bottom end from a 95 Mk3 combined with 1.8L head.
This head is a ported GTI head with Techtonics cam,twin 45 Webbers etc.
The 2.0L bottom end had new mains,hone and new rings (previously had about 110,000km's)
After the engine was tuned on dyno i finally went to pick up my car which seemed to be running well,sounding fantastic and on first impressions of driving it home, plenty of power and oodles of torque. My mechanic said that it was making 101hp at the wheels which in my book was fairly good for a light weight MK1.
Any way took car home and put in garage.
2 days later decided to take the golf out for its first run prior to competition.
Low and behold i only managed 60km before losing oil pressure. F%%&*
I got the mechanic to pick up car and diagnose.
When i arrived at work shop next day the engine was out and being disected!!
It turned out that the crankshaft had been ground away on the journals, not the bearing shells as you would expect, and whats more there was a piece of metal stuck on oil pump relief valve!! Major scoring throughout the engine.
End result the engine is totally stuffed.
Cost wise it is too expensive too rebuild so maybe start with another engine altogether.
Don't reailly know the answer so if anyone can help with any info on this mod i would really really appreciate help with my dilemma.
How this or why this happened is a mystery to me and apparently to my mechanic also.
Has anyone experienced malfunctions or any problems in fitting 1.8 head to 2.0L bottom end???
If so what and why???
Does anyone know if there are inherent problems in carrying out this modification???
Are there any oil pressure,flow problems associated with the fitting
1.8 head to 2.0l bottom????
Your help would be majorly appreciated.
Thanks
Pete Mk1
PS
Happy New Year