Discussion in '240Z / 260Z / 280Z' started by jonbills, Jan 14, 2018.
What sort of price will that mani be John?
I don't have a price yet Jon. I'm having a test flange cut at the moment then I need to make the runner and get it all to the welders. The cost for materials is low but does have quite a bit of labour time. I expect the head flange and support flange to be under £40 but probably around £60 for 2. Runner material is next to nothing (£30 for 3m length). Welding will be around £80 as an estimate. You will need 2 sets of throttle bodies to make up a 6 bank and they are around £250 each. With these you do get everything you need such as injectors, TPS, cable linkage, MAP interlink pipes, fuel rail, and trumpets. These are easily reassembled as a bank of 6 using 5mm studding.
Here is the 6 bank.
Thanks John. Sounds a bit cheaper than what I'm doing, but with a lot more running around. Will be interesting to see how it works out.
My main reason for moving away from the TWM throttle bodies is for improved return, adjustability between ITB's and smoother operation. The bike ones work lovely and are very easy to balance. the TWM's are sticky from idle and a real pain to get perfectly balanced. Because I'm running the engine on the lean side I end up with spitting back if one of the cylinders if it's slightly more lean than the others. I have persevered with this and tried to get it as best I can but I needed a better solution. OEM setups IMO are the way to go.
What flow do you have from those injectors John?
I'm looking at some from an ST170 for mine, they flow 315cc. Is that enough for 270 - 300bhp?
That should be fine I ran my 1jz on 360cc injectors up to 420hp for 6 years. The duty was high but still had 15% of time left.
Not sure what the bike ones are but plenty for an l-series.
I'm making a shopping list for my injection conversion.
Is there anything obvious missing?
Low pressure pump
High pressure pump
Swirl pot (how big? 1L?)
Should be done by July
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