Can anyone tell me the difference (if any) in a 1st generation and 2nd generation VH45DE 'block' as I don't have a manual to compare the differences.
Regards
AGM
Block differences
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Q45tech
- Moderator
- Posts: 14296
- Joined: Tue Apr 30, 2002 3:19 am
- Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl
It appears that there are NO block differences [90-96] just the heads on up...........except the chain guides external to the block.
But we have never changed a 94-95-96 engine yet [nor pulled the heads on one], examination of a trashed 96 Q engine [in the car oil pan off showed the same bearing girdle and components as far as I could see.].
Whether early heads will bolt on to a later block is unknown!
But we have never changed a 94-95-96 engine yet [nor pulled the heads on one], examination of a trashed 96 Q engine [in the car oil pan off showed the same bearing girdle and components as far as I could see.].
Whether early heads will bolt on to a later block is unknown!
Someone could just ask Joe the next time they place an order. The short block has it's own part number, like everything else. They'll be able to tell you if it's the same part or not. But if it's not, perhaps any differences would be minor enough that they could be interchanged.1st gen displacement is 4.494L, borexstroke is 93x82.7mm.
Q45tech,
You second guessed my next question, which was going to be, can I fit the 1990 heads from my spare engine on the 94 engine in my car.
Looks like there is only one way to find out. Trial and error.
My understanding is that the first generation heads are easier to flow test and in standard trim have slightly more low down torque.
Rather than pull the whole engine out, I was looking at swapping just the heads and fitting a mild cam to match the Supercharger.
Regards
AGM
You second guessed my next question, which was going to be, can I fit the 1990 heads from my spare engine on the 94 engine in my car.
Looks like there is only one way to find out. Trial and error.
My understanding is that the first generation heads are easier to flow test and in standard trim have slightly more low down torque.
Rather than pull the whole engine out, I was looking at swapping just the heads and fitting a mild cam to match the Supercharger.
Regards
AGM