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2300cc 16v Build


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52 replies to this topic

#21
projectpug

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Sounds very interesting and should be a really powerful beast when done. Do you think its worth all the extra effort/cash to go from the 2.2 to 2.3? What are the gains? Wouldnt the extra long stroke be less reliable too?

#22
wardy18

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to be honest from chatting to Matt at QEP the cost from 2.2 to 2.3 isnt a mssive hike, the 2.2 conversion would still mean sourcing the 92mm crank and off the shelf custom pistons from QEP running standard rods but the only difference with the 2.3 conv is gettin the pistons made to my spec with a lower compression height and sourcing a 96mm crank (already sourced) instead of the 92mm, still standard rods

gains would be alot more torque and at a lower rev range so the engine doesnt need to be screamed to get peak power and is ideal for hillclimbing as i need a torquey motor to drive me out the slow corners

reliability didnt seem an issue when chatting with Matt as ill be sticking to 87mm bore

#23
SurGie

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to be honest from chatting to Matt at QEP the cost from 2.2 to 2.3 isnt a mssive hike, the 2.2 conversion would still mean sourcing the 92mm crank and off the shelf custom pistons from QEP running standard rods but the only difference with the 2.3 conv is gettin the pistons made to my spec with a lower compression height and sourcing a 96mm crank (already sourced) instead of the 92mm, still standard rods

gains would be alot more torque and at a lower rev range so the engine doesnt need to be screamed to get peak power and is ideal for hillclimbing as i need a torquey motor to drive me out the slow corners

reliability didnt seem an issue when chatting with Matt as ill be sticking to 87mm bore



I was told that QEP has closed down and not building any more engine's.
When did you speak to him?

#24
wardy18

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Matt is only supplying me the parts and doin the head work, not actually building the engine itself, i have spoken to him over the last few days and have had no hints he's closed or closing

#25
projectpug

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Sounds good Wardy if its not much more cash then might as well go for it. Have you any idea what bhp/torque your aiming for/estimating/want?

#26
wardy18

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Thats what i thought, with a little more effort and budget i go all the way and get an insane engine rather than an awesome engine!

ive never really understood why people aim for a certain bhp or torque figure, i jus want as much as i can get from what im building but depending on how the budget goes ill be running standard 6 cams to start with and still on the old carbs, am hoping for 250bhp up to 300bhp would be excellent but it'll be more of a torque motor so we'll see, once i have a decent set of cams in ill bring it to the uk for a power run with the carbs on to see what its running then eventually when i go tb's ill do the same and compare

big plans i just hope it all goes to plan

#27
Batfink

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QEP are not closed or closing. I use them as a distributor and they still are supplying me for the foreseeable future

#28
carbers205

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Wardy have you spoken to Matt about big end width?
Reason I ask is the standard XU rods are 24mm whereas the 92mm crank is 26mm so theres too much float. Not sure whether this applies for the 96mm crank though. Just something else to consider as you will need new rods if this is the case.

#29
wardy18

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Matt did mention and knew how to resolve it so yeh he's aware and he also said there's people that have built the 2.2 blocks with the 92mm crank and hadn't noticed this and so the rods are floating still!

#30
wardy18

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do all xu cranks have toothed cogs to run the oil pump?!

the 96mm crank has and just wanna make sure this will go in with the GTi6 engine and oil pump configuration!?

#31
Mandic

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If You are referring to toothed crank web, that's for balancer shafts.

Cheers

Ziga

#32
wardy18

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Is this still ok for a gti6 block?

#33
carbers205

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No we're talking oil pump sprocket and yes XUs and XUDs run sprockets, just be careful there are a few different chain lengths and sprocket sizes/designs depending on the crank.

#34
wardy18

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Ok so just a matter of gettin the right length chain to fit

#35
welshpug

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and the correct sprockets. do you have a picture of the crank?

#36
wardy18

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Haven't got one yet, soon thou, yeh just found out that the sprocket can be changed so thats ok, ill have the gti6 crank so i can always swap it for that, think ill just have to wait and see

#37
Guest_L2theK_*

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Hello Wardy18

I don't know if it can help you, but you are velcome to look at my homepage.
It is a dairy of my 2,3 liter build
the homepage is

http://l2thek.homepage.dk/

#38
wardy18

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excellent, thanx mate ill have a read

#39
wardy18

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well thought i would update you all on the progress, i am about to purchase a GTi6 engine i have found, well a complete 'rattly' block and a head from an engine with snapped belt, none of these things matter as the block will be totally rebuilt and re-bored and the head will have bigger inlet valves and can replace any exhaust ones!!

the whole lot is going to be courierd to Matt at QEP as soon as poss for him to break the block down and re-bore to 87mm and also measure it all up for the rods and pistons as i will also have the 96mm crank delivered to him

the block will be then shipped to me with all the bits to be prepared for the re-build when i can afford the pistons

the head will stay with Matt until i can afford the solid lifters etc and cams and the head work

so there's the plan so far, its starting to come together slowly but surely

#40
projectpug

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Great news wardy :huh: nice to get the project started isn't it?